spongin

[spuhn-jin] /ˈspʌn dʒɪn/

noun

a scleroprotein occurring in the form of fibers that form the skeleton of certain sponges.

Origin

1865-70; sponge + -in²

Examples from the web for spongin

These are characterized by skeletons composed of an organic substance called spongin.

British Dictionary definitions for spongin

/ˈspʌndʒɪn/

noun

a fibrous horny protein that forms the skeletal framework of the bath sponge and related sponges

Word Origin

C19: from German, from Latin spongiasponge + -in