adj · noun · 5 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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US:/daɪˈæ.dɪk/
US:[daɪˈæ.ɾɪk]
rhymes with -ædɪk
1
adj
Meaning 1
Pertaining to a dyad, the number two; of two parts or elements.
having an arity of two (taking two arguments or operands)
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
2
adj
Meaning 2
Pertaining to a dyad, the number two; of two parts or elements.
binary
Definition source: English Wiktionary via Wiktextract
Usage: obsolete
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
3
adj
Meaning 3
Pertaining to the physical sex of a person who is exactly male or female in genetics, anatomy and hormone levels; not intersex.
Definition source: English Wiktionary via Wiktextract
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: endosex, perisex
Antonyms: none provided
4
noun
Meaning 4
The sum of two or more dyads
Definition source: English Wiktionary via Wiktextract
Topics: mathematics, sciences
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
5
adjective
Meaning 5
of or relating to a dyad or based on two
Definition source: Princeton WordNet 3.0
No example sentence was provided for this meaning.
Meaning relationships
Synonyms: none provided
Antonyms: none provided
History
Etymology
From dyad + -ic. The mathematics sense was coined by American scientist Josiah Willard Gibbs in 1884 in the second half of his book Elements of Vector Analysis.
Across languages
Translations
12 source translations are retained for this English entry.
Finnish:
kaksiosainen
— pertaining to two parts or elements
Finnish:
kaksijakoinen
— pertaining to two parts or elements
Dutch:
tweeledig
— pertaining to the number two
Dutch:
dyadisch
— pertaining to the number two
French:
dyadique
— pertaining to the number two
Galician:
diádico
— pertaining to the number two
Hungarian:
diadikus
— pertaining to the number two
Icelandic:
tvíunda-
— pertaining to the number two
Italian:
diadico
— pertaining to the number two
Japanese:
二項
(ni-kō)
— pertaining to the number two
Portuguese:
diádico
— pertaining to the number two