umbo (redirected from umbonal)

umbo /um·bo/ (um´bo) pl. umbo´nes   [L.]

1. a rounded elevation.

2. the slight projection at the center of the outer surface of the tympanic membrane.

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um·bo (mb)

n. pl. um·bos or um·bo·nes (m-bnz)

A small anatomical projection on a surface, such as that on the inner surface of the tympanic membrane at the end of the manubrium of the malleus, corresponding to the most depressed point of the membrane.

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umbo·nal (mb-nl, m-bnl), um·bonic (m-bnk) adj.

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umbo

pl. umbones [L.] a round projection.

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umbo membrana tympanae

the slight projection at the center of the outer surface of the tympanic membrane.