Word.ws English Dictionary

def.

def. is the abbreviation of definition.

Meaning of definition

Noun

definition (countable and uncountable, plural definitions)

  1. A statement of the meaning of a word, word group, sign, or symbol; especially, a dictionary definition.
    • Your definition of "elephant" needs to be more precise than "a big animal with large ears".
  2. (usually) A clear instance conforming to the dictionary or textbook definition.
    • Baroque is a good game, but only for a very narrow subset of the gaming audience. It is the very definition of a niche title.2008 May, Shoeless Wayne Santos, “Baroque” (game review), GameAxis Unwired, Hardware Zone Pte, page 51
  3. A statement expressing the essential nature of something; formulation.
  4. The action or process of defining.
  5. The act of defining; determination of the limits.
  6. A product of defining.

See all 14 meanings of definition

Noun capitalized: Def.

Def.

  1. (abbreviation) Abbreviation of defense.

Synonyms of def.

Forms of def.

pluraldefs.

Questions about def.

What is def. the abbreviation of?
Def. is the abbreviation of definition.
What part of speech is def.?
Def. is a noun.
What is the plural of def.?
The plural of def. is defs..

Words near def. in the dictionary

  1. deez nuts
  2. deez nutz
  3. def
  4. def'n
  5. def'ns
  6. def.
  7. deface
  8. defaceable
  9. defaced
  10. defacement
  11. defacements

Source and license

Adapted from Wiktionary: def. (page history and authors); Def. (page history and authors); definition (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Cite this entry: “def..” Word.ws, https://word.ws/def.. Based on Wiktionary, CC BY-SA 4.0.