pentahydrate

[ pen-tuh-hahy-dreyt ]

noun

, Chemistry.

1. a hydrate that contains five molecules of water, as potassium molybdate, KMoO 4 ⋅5H 2 O.

Other Words From

• penta·hydrat·ed adjective

Word History and Origins

Origin of pentahydrate¹

First recorded in 1915–20; penta- + hydrate