Synonym of quintet
In NMR spectroscopy, a group of five peaks whose intensity is in the ratio 1:4:6:4:1. Note, that "pentet" is a non-standard notation; it should be replaced by "quintet" (compare "quartet" and "triplet" are also based on Latin numbering).
A group of five, particularly (music) a tuplet of five notes to be played in the time for four.
A cycle adapted for five riders, all of whom can assist in the propulsion.
One of a group of five, particularly babies born from the same mother during the same birth.