spongin(redirected from spongins)
Also found in: Medical, Encyclopedia.
A sulfur-containing protein similar to collagen that forms the elastic fibrous structure of certain sponges.
(Biochemistry) a fibrous horny protein that forms the skeletal framework of the bath sponge and related sponges
[C19: from German, from Latin spongia sponge + -in]
a fibrous protein that is the main constituent of the skeleton in certain sponges.