Definition of spongin in English:


Syllabification: spon·gin
Pronunciation: /ˈspənjin


  • The horny or fibrous substance found in the skeleton of many sponges.
    More example sentences
    • Demospongea are the dominant modern group with 600 genera; they have a skeleton formed of spongin or silica, or a mixture of the two.
    • Some spicules are formed of the mineralized substances calcium carbonate and silica, while others are made of an organic substance called spongin.
    • First of all, however, spongin is not a feature consistent of all Porifera, but may be a constituent character of the Demospongiae only.

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