- a small mouthlike aperture, as of a sponge.
Origin of osculum
1605–15; < New Latin, Latin ōsculum, equivalent to ōs mouth + -culum -cule1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for oscula
The oscula are large and ragged on the edges; the shape is irregular.
Oscula numerous but minute and inconspicuous, never star-shaped.
Generally cup-shaped; oscula on inner side of cup or on upper flat surface; very soft and elastic.
The water from outside therefore flows in at the pores and finally makes its way out of the oscula.
The external membrane in many Spongillid is prolonged round and above the oscula so as to form an oscular collar.
- zoology a mouthlike aperture, esp the opening in a sponge out of which water passes
C17: from Latin: a kiss, little mouth, diminutive of ōs mouth
- A pore or minute opening.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.