noun
: a colorless flammable poisonous gas H 2 Se that has a disagreeable odor, resembles hydrogen sulfide, and is usually formed by the action of acids on selenides
noun
: a colorless flammable poisonous gas H 2 Se that has a disagreeable odor, resembles hydrogen sulfide, and is usually formed by the action of acids on selenides
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012