noun · verb · 13 senses · updated from the 2026-07-25 local source snapshot
Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.
Sound
Pronunciation
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/dɪˈfaɪn/
US:Recorded audio is listed in the source snapshot.
rhymes with -aɪn
CMU ARPABET:D IH0 F AY1 N
Digits mark lexical stress: 1 primary, 2 secondary, 0 unstressed.
1
noun
Meaning 1
A kind of macro in source code that replaces one text string with another wherever it occurs.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
verb
Meaning 2
To determine with precision; to mark out with distinctness; to ascertain or exhibit clearly.
Definition source: English Wiktionary via Wiktextract
Examples
the defining power of an optical instrument
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
verb
Meaning 3
To settle, decide (an argument etc.).
Definition source: English Wiktionary via Wiktextract
Usage: obsolete
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
4
verb
Meaning 4
To express the essential nature of something.
Definition source: English Wiktionary via Wiktextract
Examples
I define myself as a techno-anarchist.
Your past mistakes do not define who you are.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
verb
Meaning 5
To state the meaning of a word, phrase, sign, or symbol.
Definition source: English Wiktionary via Wiktextract
Examples
The textbook defined speed as velocity divided by time.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
6
verb
Meaning 6
To describe, explain, or make definite and clear; used to request the listener or other person to elaborate or explain more clearly his or her intended meaning of a word or expression.
Definition source: English Wiktionary via Wiktextract
Examples
Person 1: Is she good at math? Person 2: Define "good." If you mean if she is faster than the average middle schooler at multiplication, then yes. If you mean if she is able to do multivariable calculus, then no.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
7
verb
Meaning 7
To demark sharply the outlines or limits of an area or concept.
Definition source: English Wiktionary via Wiktextract
Examples
to define the legal boundaries of a property
Meaning relationships
Synonyms: none provided
Antonyms: none provided
8
verb
Meaning 8
To establish the referent of a term or notation.
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences
No example sentence was provided for this meaning.
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: specify, delineate, delimit, delimitate
Antonyms: none provided
Broader terms: be
Narrower terms: determine, redefine
12
verb
Meaning 12
determine the nature of
Definition source: Princeton WordNet 3.0
Examples
What defines a good wine?
Meaning relationships
Synonyms: none provided
Antonyms: none provided
Broader terms: characterize, characterise
13
verb
Meaning 13
show the form or outline of
Definition source: Princeton WordNet 3.0
Examples
The tree was clearly defined by the light
The camera could define the smallest object
Meaning relationships
Synonyms: delineate
Antonyms: none provided
Broader terms: show
History
Etymology
From Middle English definen, from Old French definer, variant of definir, from Latin dēfīniō (“limit, settle, define”), from dē + fīniō (“set a limit, bound, end”).
Across languages
Translations
93 source translations are retained for this English entry.
Finnish:
define-makro
— macro that replaces one text string with another
Bulgarian:
опреде́лям
(opredéljam)
— to determine
Dutch:
bepalen
— to determine
Dutch:
determineren
— to determine
Esperanto:
determini
— to determine
Finnish:
määrittää
— to determine
Finnish:
määritellä
— to determine
French:
déterminer
— to determine
German:
bestimmen
— to determine
Ancient Greek:
ὁρίζω
(horízō)
— to determine
Hebrew:
הגדיר
(higdír)
— to determine
Irish:
sonraigh
— to determine
Italian:
definire
— to determine
Italian:
determinare
— to determine
Māori:
tautuhi
— to determine
Persian:
تعریفتن
— to determine
Polish:
określać
— to determine
Polish:
określić
— to determine
Portuguese:
definir
— to determine
Russian:
определя́ть
(opredeljátʹ)
— to determine
Russian:
определи́ть
(opredelítʹ)
— to determine
Spanish:
determinar
— to determine
Spanish:
definir
— to determine
Spanish:
definirse
— to determine
Ukrainian:
визнача́ти
(vyznačáty)
— to determine
Ukrainian:
ви́значити
(význačyty)
— to determine
Bulgarian:
изразявам
(izrazjavam)
— express the essential nature of
Chinese Mandarin:
界定
(jièdìng)
— express the essential nature of
Dutch:
definiëren
— express the essential nature of
Dutch:
kenschetsen
— express the essential nature of
Dutch:
karakteriseren
— express the essential nature of
Esperanto:
kaŭzi
— express the essential nature of
Finnish:
määritellä
— express the essential nature of
Finnish:
määrittää
— express the essential nature of
Italian:
definire
— express the essential nature of
Portuguese:
definir
— express the essential nature of
Spanish:
aclarar
— express the essential nature of
Spanish:
definir
— express the essential nature of
Asturian:
definir
— state meaning of
Bulgarian:
дефинирам
(definiram)
— state meaning of
Bulgarian:
формулирам
(formuliram)
— state meaning of
Catalan:
definir
— state meaning of
Chinese Mandarin:
定义
(dìngyì)
— state meaning of
Czech:
definovat
— state meaning of
Danish:
definere
— state meaning of
Dutch:
definiëren
— state meaning of
Esperanto:
difini
— state meaning of
Finnish:
määritellä
— state meaning of
French:
définir
— state meaning of
Galician:
definir
— state meaning of
German:
definieren
— state meaning of
Hungarian:
definiál
— state meaning of
Hungarian:
meghatároz
— state meaning of
Italian:
definire
— state meaning of
Japanese:
定義する
(teigi suru)
— state meaning of
Latvian:
definēt
— state meaning of
Norwegian Bokmål:
definere
— state meaning of
Norwegian Nynorsk:
definere
— state meaning of
Norwegian Nynorsk:
definera
— state meaning of
Polish:
definiować
— state meaning of
Polish:
zdefiniować
— state meaning of
Portuguese:
definir
— state meaning of
Romanian:
defini
— state meaning of
Russian:
опи́сывать
(opísyvatʹ)
— state meaning of
Russian:
описа́ть
(opisátʹ)
— state meaning of
Spanish:
definir
— state meaning of
Swedish:
definiera
— state meaning of
Ukrainian:
визнача́ти
(vyznačáty)
— state meaning of
Ukrainian:
ви́значити
(význačyty)
— state meaning of
Bulgarian:
очертавам
(očertavam)
— describe, explain, make definite and clear
Dutch:
beschrijven
— describe, explain, make definite and clear
Dutch:
omschrijven
— describe, explain, make definite and clear
Finnish:
selvittää
— describe, explain, make definite and clear
Finnish:
täsmentää
— describe, explain, make definite and clear
German:
definieren
— describe, explain, make definite and clear
Italian:
definire
— describe, explain, make definite and clear
Italian:
descrivere
— describe, explain, make definite and clear
Russian:
опи́сывать
(opísyvatʹ)
— describe, explain, make definite and clear
Russian:
описа́ть
(opisátʹ)
— describe, explain, make definite and clear
Spanish:
describir
— describe, explain, make definite and clear
Spanish:
definir
— describe, explain, make definite and clear
Turkish:
tanımlamak
— describe, explain, make definite and clear
Bulgarian:
обозначавам
(oboznačavam)
— demark the limits of
Dutch:
bepalen
— demark the limits of
Dutch:
afbakenen
— demark the limits of
Finnish:
määritellä
— demark the limits of
Finnish:
rajata
— demark the limits of
French:
définir
— demark the limits of
Russian:
обознача́ть
(oboznačátʹ)
— demark the limits of
Russian:
обозна́чить
(oboznáčitʹ)
— demark the limits of