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prosopyle

[pros-uh-pahyl]
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noun
  1. (in sponges) a pore through which water is drawn from the outside into one of the saclike chambers formed by the evagination of the body wall.
Compare apopyle.

Origin of prosopyle

1885–90; < Greek prósō forward + pýlē gate
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018