spongin

S1P3O1N1G2I1N1

noun

A horny, sulfur-containing protein, related to keratin, that forms the skeletal structure of certain classes of sponges. A proteinaceous compound of which the spicules in Demospongiae are composed.

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Meanings

nounspongin (plural spongins)

plural spongins

  1. A horny, sulfur-containing protein, related to keratin, that forms the skeletal structure of certain classes of sponges. A proteinaceous compound of which the spicules in Demospongiae are composed.

Origin

From sponge + -in.

Full word history & related roots →
Cite this entry
APA

spongin. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/spongin

MLA

“spongin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/spongin. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “spongin,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/spongin.

Source: spongin on Wiktionary, CC BY-SA 4.0.