osculum

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Related to oscules: spicula

osculum

 [os´ku-lum]
a minute opening.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

os·cu·lum

, pl.

os·cu·la

(os'kyū-lŭm, -lă),
A pore or minute opening.
[L. dim. of os, mouth]
Farlex Partner Medical Dictionary © Farlex 2012

os·cu·lum

, pl. oscula (os'kyū-lŭm, -lă)
A pore or minute opening.
[L. dim. of os, mouth]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012

osculum

the large aperture in sponges through which water passes out.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005