SOPORIFIC


Meaning of SOPORIFIC in English

/ ˌsɒpəˈrɪfɪk; NAmE ˌsɑːp-/ adjective

( formal ) making you want to go to sleep :

the soporific effect of the sun

••

WORD ORIGIN

mid 17th cent.: from Latin sopor sleep + -ific .

Oxford Advanced Learner's English Dictionary.      Оксфордский английский словарь для изучающик язык на продвинутом уровне.