- trig (adj.)
[trig 词源字典]
- "smart, trim," c. 1200, from Old Norse tryggr "firm, trusty, true," from Proto-Germanic *treuwaz- (see true (adj.)). A Scottish and northern word only until 19c. Related: Trigness.[trig etymology, trig origin, 英语词源]
- trig (n.)
- 1895 as a shortening of trigonometry.