Etymology
Advertisement

lactose (n.)

sugar from milk, 1843, from French, coined 1843 by French chemist Jean Baptiste André Dumas (1800-1884) from Latin lac (genitive lactis) "milk" (from PIE root *g(a)lag- "milk") + chemical suffix -ose (2).

updated on September 19, 2017

Advertisement
Advertisement
Definitions of lactose from WordNet

lactose (n.)
a sugar comprising one glucose molecule linked to a galactose molecule; occurs only in milk;
cow's milk contains about 4.7% lactose
Synonyms: milk sugar
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.