definition of
quintuplet

[1] #1 quintuplet n. [five, 5, V, cinque, quint, quintet, fivesome, pentad, fin, Phoebe, Little Phoebe] the cardinal number that is the sum of four and one. wn

[2] #2 quintuplet n. [quint, quin] one of five children born at the same time from the same pregnancy. wn

[3] #3 quintuplet n. [quintet, quintette, quintuple] a set of five similar things considered as a unit. wn