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
tri•ad ′ic, adj. tri ′ad•ism, n. |