noun Date: 1869 a flammable poisonous gas H 2 S that has an odor suggestive of rotten eggs and is found especially in many mineral waters and in putrefying matter
HYDROGEN SULFIDE
Meaning of HYDROGEN SULFIDE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012