amphidiscn.

/ˈæmfɪdɪsk/

Etymology: < Greek ἀμϕί on both sides + δίσκος a round plate.

Zool.

Peculiar asteroid spicules, resembling two toothed wheels united by an axle, which form a layer surrounding the gemmules of sponges. (Nicholson.)

ΘΚΠ

the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > wheel-shaped

amphidisc1867

wheel-spicule1877

1867 J. Hogg Microscope (ed. 6) ii. ii. 389 Remains of the dead sponge, empty gemmule-cases with their amphidiscs.

1877 T. H. Huxley Man. Anat. Invertebr. Animals iii. 118 Nothing is left but the envelope of keratose, with imbedded amphidisks, disposed perpendicularly to its surface.

This entry has not yet been fully updated (first published 1884; most recently modified version published online November 2010).

单词	amphidisc
释义	amphidiscn. /ˈæmfɪdɪsk/ Etymology: < Greek ἀμϕί on both sides + δίσκος a round plate. Zool. Peculiar asteroid spicules, resembling two toothed wheels united by an axle, which form a layer surrounding the gemmules of sponges. (Nicholson.) ΘΚΠ the world > animals > invertebrates > subkingdom Parazoa > phylum Porifera > [noun] > member of > parts of > sponge spicule > wheel-shaped amphidisc1867 wheel-spicule1877 1867 J. Hogg Microscope (ed. 6) ii. ii. 389 Remains of the dead sponge, empty gemmule-cases with their amphidiscs. 1877 T. H. Huxley Man. Anat. Invertebr. Animals iii. 118 Nothing is left but the envelope of keratose, with imbedded amphidisks, disposed perpendicularly to its surface. This entry has not yet been fully updated (first published 1884; most recently modified version published online November 2010). < n.1867
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