S / sĕlēnītis
noun greek

sĕlēnītis

gen. sĕlēnītĭdis · gender feminine · decl. 3rd
or , , , = σεληνῖτις,
crystalline gypsum; selenite
crystalline gypsum, selenite. Form selenitis, Plin. 37, 10, 67, § 181; form selenites, Sol. 37, 31; Aug. Civ. Dei, 21, 5; Isid. 16, 4, 6.