Triplet

In poetry, a triplet is three consecutive lines of verse (either in a separate stanza or not) all of which rhyme  with each other.

In general use, a triplet is a set of three items. It may refer to:

Science

 * A series of three nucleotide bases that form Genetic code
 * J-coupling as part of NMR spectroscopy
 * Opal in preparation to be a gemstone
 * Spin triplet in quantum mechanics — as in triplet oxygen, or simply triplet state in general.
 * Tuple of length 3 in mathematics

Technologies

 * Photography triplet or paint triplet
 * Triplet lens, optical device consisting of three single lenses
 * Tandem bicycle with three seats

Other uses

 * Binghamton Triplets, a minor league baseball team
 * One of three babies in a multiple birth
 * The Triplets, a Catalan children's book
 * The Triplets (band), a Latin pop group
 * Troy Aikman, Emmitt Smith, and Michael Irvin of NFL fame from 1990-1999