grommet

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grommet

 [grom´et]
a tube inserted through the tympanic membrane for drainage of the middle ear.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

grommet

See Tympanostomy tube.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

grommet

A tube, shaped so as to be retained in a hole, being narrower in the centre than at the ends. Tiny plastic grommets are used to secure and maintain drainage of the middle ear, through the eardrum, in cases of ‘glue ear’ (secretory OTITIS MEDIA).
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005