the cardinal quantity that's the sum of one and another and something
- among three offspring born in addition through the same pregnancy
- a couple of three comparable things considered as a unit
- A collection or combination of three of a kind three united
- a group or combination of three of a kind; three united.
- Three verses rhyming collectively.
- a small grouping of three records sung or played in tree of two.
- Three young ones or offspring born at one birth.
1650s, "three consecutive outlines of poetry," from triple; possibly designed on doublet. Extended to some three of something by 1733, and three kiddies on same birth by 1787 (another word with this was trin, 1831, on model of twin). Musical definition "three notes played in the period of two" is from 1801.
(letter.) A group or combination of three of a kind; three united.
- (letter.) Three passages rhyming together.
- (letter.) Several three notes sung or played inside tree of two.
- (letter.) Three young ones or offspring created at one beginning.
Paschen in 1896 identified an unmistakable oxygen triplet in the infra-red, which is shown terrestrially only in the vacuum tube, where the spectrum is very different from that of atmospheric absorptions.