quintuple

Concise Oxford English Dictionary © 2008 Oxford University Press:
quintuple /ˈkwɪntjʊp(ə)l, kwɪnˈtjuːp(ə)l/

▶adjective

• 1 consisting of five parts or elements.

• 2 five times as much or as many.

• 3 (of time in music) having five beats in a bar.

▶verb increase or be increased fivefold. ▶noun a quintuple thing, number, or amount.

– derivatives
quintuply adverb.

– origin C16: via Fr. from med. L. quintuplus, from L. quintus ‘fifth’ + -plus as in duplus (see duple).