meatus

(redirected from acoustic meatus, meatus acusticus, meatus auditorius, auditory meatus)
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meatus

 [me-a´tus] (pl. mea´tus) (L.)
an opening or passage, especially one leading to the body surface. adj., adj mea´tal.
acoustic meatus (meatus acus´ticus) either of two passages in the ear; the external acoustic meatus leads from the auricle to the tympanic membrane (eardrum) and the internal acoustic meatus is for passage of nerves and blood vessels.
auditory meatus acoustic meatus.
meatus na´si (meatus of nose) one of the three portions of the nasal cavity on either side of the septum: inferior (meatus nasi inferior), middle (meatus nasi medius), and superior (meatus nasi superior).
ureteral meatus ureteral orifice.
meatus urina´rius (urinary meatus) the opening of the urethra on the body surface, through which urine is discharged.

me·a·tus

, pl.

me·a·tus

(mē-ā'tŭs), [TA]
A passage or channel, especially the external opening of a canal.
Synonym(s): external opening
[L. a going, a passage, fr. meo, pp. meatus, to go, pass]

meatus

(mē-ā′təs)
n. pl. mea·tuses or meatus
A body opening or passage, such as the opening of the ear or the urethral canal.

me·a′tal (-təl) adj.

meatus

A natural opening of a tubular lumen, which in the usual working medical parlance refers to the urinary meatus located in the glans penis or in the vulva. Other meatuses include the external and internal auditory meatuses, and the superior, middle and inferior meatus of the nose.

me·a·tus

, pl. meatus (mē-ā'tŭs) [TA]
A passage or channel, especially the external opening of a canal.

meatus

Any passage or opening in the body.

meatus

any natural opening or passage, particularly the external auditory meatus leading to the TYMPANUM in the ear.

me·a·tus

, pl. meatus (mē-ā'tŭs) [TA]
Passage, especially external opening of a canal.