opacity(noun) the phenomenon of not permitting the passage of electromagnetic radiation. opacity, opaqueness(noun) incomprehensibility resulting from obscurity of meaning. opacity, opaqueness(noun) the quality of being opaque to a degree; the degree to which something reduces the passage of light.
â¢ OXYTOCIC DRUG (noun). The noun OXYTOCIC DRUG has 1 sense: 1. a drug that induces labor by stimulating contractions of the muscles of the uterus. Familiarity information: OXYTOCIC DRUG used as a noun is very rare. OXYTOCIC DRUG (noun). The noun OXYTOCIC DRUG has 1 sense: 1. a drug that induces labor by stimulating contractions of the muscles of the uterus. Familiarity information: OXYTOCIC DRUG used as a noun is very rare.
Oxytocin has peripheral (hormonal) actions, and also has actions in the brain. Its actions are mediated by specific, oxytocin receptors. The oxytocin receptor is a G-protein-coupled receptor that requires magnesium and cholesterol. It belongs to the rhodopsin-type (class I) group of G-protein-coupled receptors.t is also available as a medication. Oxytocin is normally produced in the hypothalamus and stored in the posterior pituitary gland. It plays a role in intimacy, sexual reproduction of both sexes, and during and after childbirth as well as social bonding.