) one of three children or animals born at the same birth: she was expecting triplets the lamb was a triplet and small
2a set or succession of three similar things: a triplet of aces the boxer’s jab came in triplets Music a group of three equal notes to be performed in the time of two or four. a set of three rhyming lines of verse.
& Chemistry an atomic or molecular state characterized by two unpaired electrons with parallel spins.
a group of three associated lines close together in a spectrum or electrophoretic gel.