| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024tri•ad /ˈtraɪæd, -əd/USA pronunciation n. [countable]- a group of three.
tri•ad•ic, adj. WordReference Random House Unabridged Dictionary of American English © 2024tri•ad (trī′ad, -əd),USA pronunciation n. - a group of three, esp. of three closely related persons or things.
- [Chem.]
- an element, atom, or group having a valence of three. Cf. monad (def. 2), dyad (def. 3).
- a group of three closely related compounds or elements, as isomers or halides.
- [Music.]a chord of three tones, esp. one consisting of a given tone with its major or minor third and its perfect, augmented, or diminished fifth.
- Military([cap.]) the three categories of strategic-nuclear-weapons delivery systems: bombers, land-based missiles, and missile-firing submarines.
- Greek triás See tri-, -ad1
- Latin triad- (stem of trias)
- 1540–50
Collins Concise English Dictionary © HarperCollins Publishers:: triad /ˈtraɪæd/ n - a group of three; trio
- an atom, element, group, or ion that has a valency of three
- a three-note chord consisting of a note and the third and fifth above it
- an aphoristic literary form used in medieval Welsh and Irish literature
- the US strategic nuclear force, consisting of intercontinental ballistic missiles, submarine-launched ballistic missiles, and bombers
Etymology: 16th Century: from Late Latin trias, from Greek; related to Greek treis threetriˈadic adj ˈtriadism n Collins Concise English Dictionary © HarperCollins Publishers:: Triad /ˈtraɪæd/ n - any of several Chinese secret societies, esp one involved in criminal activities, such as drug trafficking
|