Academic Dictionary

Find the word you need. Understand it. Use it well.

Search clear definitions, synonyms, related words, spelling, usage and word origins. Then explore vocabulary for academic writing, professional communication and specialist subjects.

Worth knowing today

Open a word for more than its definition.

These entries change each day. They are selected from active dictionary entries with useful definitions, then presented with direct routes to both the entry and its thesaurus connections.

Word worth knowing

Deficit

Deficiency in amount or quality; a falling short; lack; as, a deficit in taxes, revenue, etc.

Precise expression

Responsibility

The state of being responsible, accountable, or answerable, as for a trust, debt, or obligation.

Unexpected connection

Ricinelaidic

Pertaining to, or designating, an isomeric modification of ricinoleic acid obtained as a white crystalline solid.

Noun

Matross

Formerly, in the British service, a gunner or a gunner's mate; one of the soldiers in a train of artillery, who assisted the gunners in loading, firing, and spongin…

Noun

Scab

An incrustation over a sore, wound, vesicle, or pustule, formed by the drying up of the discharge from the diseased part.

This week’s guided exploration

English: A Language Built by Borrowing

From Norse skies to Arabic algorithms and American chocolate.

Follow the routes through which trade, conquest, scholarship and migration expanded English vocabulary.

History inside language

Words carry the journeys that made them.

These short etymology stories are drawn from editorial editions and refreshed each week. Open the full entry to continue from origin to present-day meaning.

Words That Make Writing More Precise

nuanced

From French nuance, “shade of colour”.

The Science of the Unseen

catalyst

From Greek katalysis, “dissolution”, via modern chemistry.

The Language of Law

Tort

From Old French tort, “wrong, injury”, from Latin tortus, “twisted”.

Featured archive

Return to a subject whenever it becomes useful.

Guided editions organise related vocabulary around an idea, period or field. The lead edition changes, but the complete archive remains available.

Keep exploring

The right word is easier to find when you know what you need it to do.

Search for a definition, compare synonyms, follow an origin or explore a group of connected terms. Academic Dictionary is designed to move from finding a word to understanding it and using it with confidence.