I. ˈseləˌnīt noun
( -s )
Etymology: New Latin selenites, from Greek selēnitēs ( lithos ), literally, (stone) of the moon, from selēnitēs of the moon (from selēnē moon + -itēs -ite) + lithos stone; from the belief that it waxed and waned with the moon — more at selen-
: a variety of gypsum occurring in transparent crystals or crystalline masses
II. noun
( -s )
Etymology: International Scientific Vocabulary selen ious + -ite
: a salt or ester of selenious acid