am·phi·disk
variants:
or amphidisc \ ˈamfəˌdisk \
plural -s
Definition of amphidisk
: a spicule having a stellate disk at each end found in the reproductive bodies of freshwater sponges of the genus Spongilla and in some of the Hyalospongiae
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Time Traveler for amphidisk
The first known use of amphidisk was in 1856
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