Any of several hormones having both growth-promoting and lactogenic properties; "human chorionic somatomammotrophin", a hormone of this kind which is produced by the human placenta during pregnancy.
Origin
1960s.
Definition of somatomammotrophin in US English:
somatomammotrophin
noun
Physiology
Any of several hormones having both growth-promoting and lactogenic properties; "human chorionic somatomammotrophin", a hormone of this kind which is produced by the human placenta during pregnancy.