AI Glossary: 3,885 terms, defined

Plain-language definitions of the vocabulary used across machine learning, model architectures, tooling and AI safety. Every entry opens with a one-sentence definition, then explains where the term is used.

250 terms

Generative AI

Diffusion Model

Diffusion Model is a type of generative algorithm that creates data by simulating a gradual noising and denoising process to capture complex data distributions.

Other

Diffusion Models

Diffusion models are a class of generative algorithms that create data by gradually transforming random noise into meaningful output through a stepwise refinement process.

Generative AI

Digital Art

Digital Art is artwork created or enhanced using digital technology, such as computers, software, and digital tools.

Other

Digital Brain

Digital Brain is a technology or system designed to simulate human cognitive processes using digital tools and artificial intelligence.

Other

Digital Character

Digital Character is a computer-generated persona used to represent a person or entity in virtual environments and digital media.

AI Ethics

Digital Divide

Digital Divide is the gap between individuals or communities that have access to modern information and communication technologies and those that do not.

Other

Digital Health

Digital Health is the use of technology and digital tools to improve healthcare delivery, management, and overall patient outcomes.

Other

Digital Health Assistant

A Digital Health Assistant is a software tool designed to support individuals in managing their health through personalized guidance, monitoring, and communication.

Other

Digital Human

Digital Human is a computer-generated virtual representation of a person designed to interact with users in realistic and engaging ways.

Other

Digital Humans

Digital Humans are computer-generated virtual characters designed to simulate real human appearance, behavior, and interaction for communication and engagement purposes.

Other

Digital Lending

Digital lending is the process of providing loans through online platforms using technology to automate application, approval, and disbursement.

Computer Vision

Digital Pathology

Digital Pathology is the practice of digitizing traditional pathology slides to allow for improved analysis, storage, and sharing of medical data.

Other

Digital Rights Management

Digital Rights Management (DRM) is a technology used to control and protect the use, distribution, and access of digital content and intellectual property.

Other

Digital Therapy

Digital Therapy is a technology-driven treatment approach that uses software and digital tools to support or deliver therapeutic interventions.

AI Fundamentals

Digital Twin

A Digital Twin is a virtual representation of a physical object or system that is used to optimize performance and predict outcomes.

Other

Digital Worker

Digital Worker is an automated software agent designed to perform repetitive, rule-based tasks to support business processes efficiently.

Other

Digital Workforce

Digital workforce is the use of software robots, artificial intelligence, and automation tools to perform tasks traditionally done by human employees.

Computer Vision

Dilated Convolution

Dilated convolution is a type of convolutional operation that expands the receptive field by inserting spaces between kernel elements without increasing the number of parameters.

Data & Analytics

Dimension Table

A Dimension Table is a database table used in data warehousing that stores descriptive attributes related to business dimensions for analysis and reporting.

AI Fundamentals

Dimensionality Reduction

Dimensionality Reduction is the process of reducing the number of random variables under consideration by obtaining a set of principal variables.

AI Fundamentals

Directed Acyclic Graph

A Directed Acyclic Graph (DAG) is a graph structure used to model data and processes where edges have a direction and cycles are not allowed.

AI Agents & Systems

Directory Facilitator

Directory Facilitator is a software component that manages the registration, lookup, and communication of agents within a multi-agent system.

Reinforcement Learning

Discount Factor

Discount factor is a multiplier used to calculate the present value of future cash flows by accounting for the time value of money.

About the TiorAI AI Glossary

The TiorAI AI Glossary is a free reference of 3,885 artificial intelligence terms, each defined in plain English. Every entry opens with a one-sentence definition that stands on its own, then explains where the term is actually used and how it sits next to the ideas around it. There is nothing to sign up for and nothing to download: each definition has its own page and its own URL, so a term you needed once can be linked to and found again.

Three ways to find a term

They combine, and none of them cancels the others. The A to Z strip narrows the index to a single initial, with the # key collecting the entries that begin with a digit or a symbol and that no letter would reach. The category filter cuts the glossary to one of sixteen subject areas, among them Machine Learning, Deep Learning and Neural Networks, Natural Language Processing, Computer Vision, Generative AI, Reinforcement Learning, AI Agents and Systems, MLOps and Infrastructure, Data and Analytics, and AI Ethics. The search field matches names and definitions, so a concept you can only half-name still surfaces. Every combination has its own URL, which means a narrowed view can be bookmarked or sent to a colleague.

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What the definitions cover

The vocabulary of modern AI, at the three depths people arrive needing. The fundamentals a first week runs into — model, parameter, training, inference, overfitting. The architecture behind current systems — transformers, attention, embeddings, diffusion, retrieval-augmented generation. And the operational and governance language that turns up in a procurement review or a policy document — fine-tuning, hallucination, alignment, model drift, bias. Terms are defined as they are used in practice rather than as they appear in a paper abstract.

Definitions that answer first

Each entry leads with the answer. The opening sentence says what the term means without assuming the rest of the page, which is what makes an entry useful to someone who arrived from a search with exactly one question. The explanation underneath is for the reader who wants more than that: what the idea is commonly confused with, what it looks like in practice, and which neighbouring terms are worth reading next. The card in the index above shows the opening of that definition, so you can tell from the results whether an entry is the one you want.

Where the glossary fits

A glossary answers what something means; it is not the place that tells you what to do about it. Where a concept has products behind it, the AI tools directory is where they are listed, and where it has a working instruction behind it, the prompt library is where that lives. Entries link out to those when the link earns its place, and the glossary stays what a glossary is — the definitions, ordered so they can be browsed, and written so a single one can be read on its own.

Using this glossary

How is the glossary ordered?

Alphabetically by term name, which is the order a reference work is browsed in and the order every page of this archive has always used. The sort menu can switch it to reverse alphabetical, or to recently added and recently updated if you want to see what has changed.

What does the letter strip do?

It narrows the index to terms whose name begins with that character, and it keeps whatever else you have set — a category filter, a search, a sort — so you can move between letters without starting again. The # entry collects the terms that begin with a digit or a symbol, which no letter would reach.

Why do some terms have no specific category?

Entries that span several areas, or that predate the current category set, sit under “Other”. It holds a large share of the glossary, so the filter is most useful for narrowing to a named topic rather than for excluding one.

What is in a glossary entry?

A short definition in plain language, then a longer explanation of where the term is used and how it relates to neighbouring concepts. The card above shows the opening of that definition; the entry itself also links to related terms and, where relevant, to the AI tools that implement the idea.

How do I search the glossary?

The field at the top matches term names and definitions, so a concept you can only half-name will usually surface. Search combines with the category filter and the letter strip, and every combination has its own URL, so a narrowed view can be bookmarked or shared.