- trident
[trident 词源字典]
- trident: see tooth
[trident etymology, trident origin, 英语词源] - trident (n.)
- "three-pointed spear," mid-15c., from Latin noun use of adjective tridentem (nominative tridens) "three-pronged, three-toothed," from tri- "three" (see tri-) + dens "tooth" (see tooth). As a type of U.S. nuclear-powered submarine, recorded from 1972. Related: Tridental.