DORMITIVE
Etymology
Adjective
dormitive (comparative more dormitive, superlative most dormitive)
Causing sleep.
Synonyms
• See also soporific
Noun
dormitive (plural dormitives)
A medicine to promote sleep; a soporific or opiate.
Synonyms
• See also sleep inducer
Source: Wiktionary
Dor"mi*tive, a. Etym: [Cf. F. dormitif, fr. dormire to sleep.]
Definition: Causing sleep; as, the dormitive properties of opium. Clarke.
– n. (Med.)
Definition: A medicine to promote sleep; a soporific; an opiate.
Source: Webster’s Unabridged Dictionary 1913 Edition