hydrocolloid

[ hahy-druh-kol-oid ]
/ ˌhaɪ drəˈkɒl ɔɪd /

noun

a substance that forms a colloid when combined with water.

Origin of hydrocolloid

First recorded in 1925–30; hydro-1 + colloid

OTHER WORDS FROM hydrocolloid

hy·dro·col·loi·dal [hahy-droh-kuh-loid-l] /ˌhaɪ droʊ kəˈlɔɪd l/, adjective

Medical definitions for hydrocolloid

hydrocolloid
[ hī′drə-kŏloid′ ]

n.

A substance that forms a gel with water.
Such a substance used to take dental impressions, especially one derived from marine kelp.