English

lactosamine

Blend of lactose + amine.

Latin lac ‘milk’

French lactose

Egyptian jmn

Ancient Greek Ᾰ̓́μμων

Latin Ammōn

Latin ammoniacus

English ammonia

English amine

Today it means

noun An amino derivative of lactose that is found in many biologically active carbohydrates

Language periods are conventional ranges, not dates for this word.

Etymograph / lactosamine