Akademik

hollow

A concavity or depression.

- Sebileau h. depression between the inferior aspect of the tongue and the sublingual glands.

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hol·low 'häl-(.)ō, -ə(-w) n a depressed part of a surface or a concavity <the \hollow at the back of the knee>

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hol·low (holґo) 1. a depressed area or concavity. 2. enclosing an empty space or cavity.

Medical dictionary. 2011.