Medical term:
umbo
umbo
[um´bo] (L.)1. a rounded elevation.
2. the slight projection at the center of the outer surface of the tympanic membrane.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.
um·bo
, gen.um·bo·nis
, pl.um·bo·nes
(ŭm'bō, -bō-nis, -bō-nēs),1. A projecting point of a surface.
2. Umbo of tympanic membrane.
[L. boss of a shield, a knob]
Farlex Partner Medical Dictionary © Farlex 2012
umbo
(ŭm′bō)n. pl. umbos or umbones (ŭm-bō′nēz)
A small anatomical projection on a surface, such as that on the inner surface of the eardrum at the end of the manubrium of the malleus, corresponding to the most elevated point of the eardrum.
um′bo·nal (ŭm′bə-nəl, ŭm-bō′nəl), um·bon′ic (ŭm-bŏn′ĭk) adj.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
um·bo
, pl. umbones (ŭm'bō, -nēz) [TA]1. A projecting point of a surface.
2. [TA]
Synonym(s): umbo of tympanic membrane.
Synonym(s): umbo of tympanic membrane.
[L. boss of a shield, a knob]
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
umbo
the pointed centre of a clam shell, being the oldest part around which are many concentric lines of growth.Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
umbo
An area (0.15 mm-0.20 mm) in the centre of the foveola. Stimulation of this area results in the highest visual acuity.
Millodot: Dictionary of Optometry and Visual Science, 7th edition. © 2009 Butterworth-Heinemann
umbonate
(ŭm′bə-nāt′, ŭm-bō′nĭt)adj.
Having or resembling a knob or knoblike protuberance.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
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