spongin

/spuhn-jin/US // ˈspʌn dʒɪn //UK // (ˈspʌndʒɪn) //

海棉素,海绵蛋白,海棉蛋白,海绵状物

Definitions

n.名词 noun

1
- : a scleroprotein occurring in the form of fibers that form the skeleton of certain sponges.

In other species the spongin is intermixed with spicules of silica, or of carbonate of lime, in various shapes.
The amount of spongin present is also different in different species.
The consistency of a sponge depends on two factors—the number of spicules present, and the amount of spongin.
Spicules forming triangular meshes and occasionally arranged in vertical lines several spicules broad but without spongin.
You better hustle ahead with your spongin' off; I'm just about through here!