Word.ws English Dictionary

Past tense of define

regular verb

The past tense of define is defined. The past participle is also defined.

Forms of define

Base form (V1)define /dɪˈfaɪn/
Past tense (V2)defined /dɪˈfʌɪnd/
Past participle (V3)defined /dɪˈfʌɪnd/
Present participledefining
Third person singulardefines

Defined in a sentence

  • Cantor defined a one-to-one correspondence between the points of the square and the points of the line segment.2013 May-June, Brian Hayes, “Crinkly Curves”, in American Scientist, volume 101, number 3, page 178
  • The textbook defined speed as velocity divided by time.
  • Velocity is a vector defined by the speed of an object and its direction.From the entry vector
  • You will find the term defined at the end of Roman one.From the entry roman
  • The Gergonne triangle is defined by the three touchpoints of the incircle on the three sides.From the entry touchpoint

Meaning of define

  1. verb To determine with precision; to mark out with distinctness; to ascertain or exhibit clearly.
  2. verb To settle, decide (an argument etc.).
  3. verb To express the essential nature of something.

Full definition of define

Questions about the past tense of define

What is the past tense of define?
The past tense of define is defined.
What is the past participle of define?
The past participle of define is defined.
Is define a regular or irregular verb?
Define is a regular verb: its past tense adds -d.

Source and license

Adapted from Wiktionary: define (page history and authors) and the entries of its forms. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws left out forms marked obsolete, archaic, rare or dialectal and added the examples. Wiktionary data of 2026-09-02.

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Cite this page: “Past tense of define.” Word.ws, https://word.ws/past-tense/define. Based on Wiktionary, CC BY-SA 4.0.