Reference

The Kalnut Glossary

Plain-English definitions for 76+ essential terms across news, technology, business, science, and politics. Your guide to understanding the world.

A4 terms

Algorithm

Technology

A step-by-step procedure or set of rules for solving a problem or accomplishing a task, especially by a computer.

Antibiotic Resistance

Health

When bacteria evolve to resist antibiotics, making infections harder or impossible to treat. Considered one of the biggest global health threats.

API

Technology

Application Programming Interface — a set of protocols and tools that allow different software applications to communicate with each other.

Artificial Intelligence (AI)

Technology

The simulation of human intelligence processes by machines, especially computer systems. AI encompasses learning, reasoning, problem-solving, perception, and language understanding.

B7 terms

Bear Market

Business

A period of falling stock prices, typically defined as a 20% decline from recent highs, associated with economic slowdown and pessimism.

Biodiversity

Environment

The variety of life on Earth at all levels, from genes to ecosystems. Declining biodiversity is a key indicator of ecological health.

Bipartisan

Politics

Involving cooperation, agreement, and compromise between two major political parties — in the US context, Democrats and Republicans.

Blockchain

Technology

A distributed, decentralized digital ledger that records transactions across multiple computers in a way that is transparent and tamper-resistant.

Box Office

Entertainment

The total revenue generated by a film from ticket sales, used as the primary measure of a movie's commercial success.

BRICS

World

An intergovernmental organization comprising Brazil, Russia, India, China, and South Africa (with new members added in 2024), representing emerging economies.

Bull Market

Business

A period of rising stock prices, typically defined as a 20% increase from recent lows, characterized by investor optimism and economic growth.

C9 terms

Cancel Culture

Culture

The phenomenon of withdrawing support from public figures who have done or said something considered objectionable, amplified through social media.

Carbon Neutral

Environment

Achieving net-zero carbon dioxide emissions by balancing emissions produced with an equivalent amount removed from the atmosphere.

Carbon Offset

Environment

A reduction in greenhouse gas emissions made to compensate for emissions produced elsewhere, often purchased by companies to meet sustainability targets.

Climate Model

Science

A mathematical representation of the climate system used to simulate past, present, and future climate conditions and project global temperature changes.

Clinical Trial

Health

A research study that tests how well new medical approaches work in people, conducted in three phases with increasing scale and scrutiny.

Cloud Computing

Technology

The delivery of computing services — including servers, storage, databases, networking, and software — over the internet ('the cloud') to offer faster innovation and flexible resources.

CRISPR

Science

A revolutionary gene-editing technology that allows scientists to precisely modify DNA sequences, with applications in medicine, agriculture, and research.

Cryptocurrency

Technology

Digital or virtual currency secured by cryptography, operating independently of central banks. Bitcoin and Ethereum are prominent examples.

Cybersecurity

Technology

The practice of protecting systems, networks, and programs from digital attacks, unauthorized access, damage, or theft of information.

D1 term

Deepfake

Technology

Synthetic media in which a person's likeness is replaced with someone else's using AI, raising concerns about misinformation and fraud.

E3 terms

Electoral College

Politics

The body of electors established by the US Constitution to elect the President and Vice President, comprising 538 electors.

Executive Order

Politics

A directive issued by the President of the United States that manages operations of the federal government and has the force of law.

Exoplanet

Science

A planet orbiting a star outside our solar system. NASA's Kepler mission and the James Webb Space Telescope have identified thousands.

F3 terms

FDA Approval

Health

Authorization from the US Food and Drug Administration confirming that a drug or medical device meets safety and efficacy standards for public use.

Federal Reserve (The Fed)

Business

The central banking system of the United States, responsible for monetary policy, regulating banks, and maintaining financial stability.

Filibuster

Politics

A prolonged speech or series of speeches made in a legislative body to delay or prevent a vote on a measure.

G6 terms

G7 / G20

Politics

Forums of major economies. The G7 comprises seven wealthy democracies; the G20 includes 19 countries plus the EU, representing 85% of global GDP.

GDP (Gross Domestic Product)

Business

The total monetary value of all goods and services produced within a country in a specific time period, used as a key indicator of economic health.

Generative AI

Technology

AI systems that can create new content — text, images, audio, or video — based on patterns learned from training data.

Geopolitics

Politics

The influence of geographic factors on politics and international relations, including a country's location, resources, and strategic position.

GOAT

Sports

Greatest Of All Time — an informal superlative applied to athletes widely considered the best in their sport's history, such as LeBron James or Serena Williams.

Greenwashing

Environment

Deceptive marketing in which a company falsely claims or overstates its environmental credentials to appeal to eco-conscious consumers.

H2 terms

Hedge Fund

Business

An investment vehicle that employs diverse strategies — including leveraging and short-selling — to generate returns regardless of market direction.

Herd Immunity

Health

When a sufficient proportion of a population has become immune to an infection — through vaccination or prior infection — making spread unlikely.

I4 terms

Inflation

Business

The rate at which the general level of prices for goods and services rises, eroding purchasing power over time.

Influencer

Culture

A person who leverages their social media following and perceived authority in a niche to affect the purchasing decisions or opinions of others.

Interest Rate

Business

The cost of borrowing money, expressed as a percentage of the principal. Central banks raise rates to cool inflation and lower them to stimulate growth.

IPO

Business

Initial Public Offering — the first time a private company offers shares to the public on a stock exchange, raising capital and allowing early investors to cash out.

L2 terms

Large Language Model (LLM)

Technology

A type of AI trained on massive text datasets that can generate, translate, summarize, and converse in human language. Examples include GPT-4, Claude, and Gemini.

Lobbying

Politics

The act of attempting to influence decisions made by government officials, typically by special interest groups or corporations.

M7 terms

Machine Learning

Technology

A subset of AI where systems learn from data to improve performance on tasks without being explicitly programmed.

March Madness

Sports

The NCAA Division I Men's Basketball Tournament, a 68-team single-elimination bracket held annually in March and April.

Market Cap

Business

Market capitalization — the total market value of a publicly traded company's outstanding shares, calculated by multiplying share price by total shares.

Mental Health

Health

A state of well-being in which an individual realizes their own potential, can cope with normal stresses, and contributes to their community.

Metaverse

Entertainment

A collective virtual shared space created by the convergence of augmented reality, virtual reality, and the internet, popularized by Meta (formerly Facebook).

mRNA Vaccine

Science

A vaccine that uses messenger RNA to instruct cells to produce a protein that triggers an immune response. Pioneered widely during COVID-19.

Multilateralism

World

International cooperation where multiple countries work together to address common problems, typically through institutions like the UN, WHO, or WTO.

N4 terms

NATO

Politics

North Atlantic Treaty Organization — a military alliance of 32 North American and European countries committed to mutual defense.

Net Zero

Environment

A state in which greenhouse gases going into the atmosphere are balanced by removal from the atmosphere, typically targeted by 2050 by many nations.

Neural Network

Technology

A computing system loosely modeled on the human brain, consisting of interconnected nodes that process information using connectionist approaches.

NFT

Culture

Non-Fungible Token — a unique digital asset stored on a blockchain, used to prove ownership of digital art, collectibles, or media.

O1 term

Open Source

Technology

Software whose source code is made freely available for anyone to view, use, modify, and distribute.

P3 terms

Pandemic

Science

An epidemic that has spread over multiple countries or continents, usually affecting a large number of people. Declared by the WHO based on global spread.

Paris Agreement

Environment

A 2015 international treaty on climate change, adopted by 196 parties, aiming to limit global warming to 1.5°C above pre-industrial levels.

Peer Review

Science

The process by which scientific research is evaluated by other experts in the same field before publication to ensure accuracy and credibility.

Q1 term

Quantum Computing

Technology

Computing using quantum-mechanical phenomena — like superposition and entanglement — to perform operations that classical computers struggle with.

R4 terms

Recession

Business

A significant decline in economic activity lasting more than two quarters, marked by falling GDP, rising unemployment, and reduced consumer spending.

Refugee vs Asylum Seeker

World

A refugee has already been granted protection; an asylum seeker has fled their country and is awaiting a decision on refugee status from a host country.

Renewable Energy

Environment

Energy from naturally replenishing sources — solar, wind, hydropower, and geothermal — that produce little to no greenhouse gas emissions.

Rotten Tomatoes Score

Entertainment

An aggregated review score: the Tomatometer reflects critic consensus, while the Audience Score reflects viewer ratings.

S8 terms

Salary Cap

Sports

A limit set by a sports league on the total amount a team can spend on player salaries, designed to promote competitive balance.

Sanctions

Politics

Coercive measures imposed by one country or a group of countries against another to pressure changes in behavior or policy.

Semiconductor

Technology

A material that conducts electricity only under certain conditions, used as the basis for transistors and integrated circuits powering modern electronics.

Showrunner

Entertainment

The person with the ultimate creative control over a TV series, often serving as both head writer and executive producer.

Sovereignty

World

The full right and power of a governing body to govern itself without interference from outside sources or bodies.

Stem Cell

Science

Undifferentiated cells capable of self-renewal and differentiation into specialized cell types, with significant therapeutic potential.

Streaming Wars

Culture

The intense competition between subscription streaming services — Netflix, Disney+, HBO Max, Apple TV+ — for subscribers and content.

Supply Chain

Business

The network of organizations, people, activities, and resources involved in supplying a product to the end consumer.

T2 terms

Trade Deficit

World

When a country imports more goods and services than it exports, resulting in a negative balance of trade.

Transfer Window

Sports

The period during which professional soccer clubs can buy and sell players. It typically opens in summer and January for most major leagues.

U2 terms

Unicorn

Business

A privately held startup company valued at over $1 billion. The term coined by Aileen Lee in 2013 reflects the rarity of such valuations.

Universal Healthcare

Health

A healthcare system that provides access to health services for all citizens without financial hardship, funded publicly or through insurance mandates.

V3 terms

Venture Capital

Business

Private equity funding provided to early-stage startup companies with high growth potential in exchange for equity or an ownership stake.

Veto

Politics

The constitutional right of the President to reject legislation passed by Congress, which Congress can override with a two-thirds majority.

Viral Content

Culture

Online content that spreads rapidly through social sharing, often reaching millions of views within hours through platforms like TikTok, Twitter, and YouTube.