Meatus definition

mē-ātəs
meatuses
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Frequency:
A body opening or passage, such as the opening of the ear or the urethral canal.
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A ductlike passage within the body or the external opening of such a passage, as in the ear, nose, or urethra.
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A body opening or passage, such as the opening of the ear or the urethral canal.
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(anatomy) A tubular opening or passage in the body.

The urinary meatus is the opening of the urethra, situated on the glans penis in males, and in the vulva in females.

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Plural form of meatus.
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Other Word Forms

Noun

Singular:
meatus
Plural:
meatuses

Origin of meatus

  • Latin meātus passage from past participle of meāre to pass mei-1 in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Latin meātus (“a course, passing").

    From Wiktionary

Meatus Sentence Examples

  • As a rule the meatus is the narrowest part of the whole canal.

  • The skin of the penis forms a fold which covers the glans and is known as the prepuce or foreskin; when this is drawn back a median fold, the frenuluni praeputii, is seen running to just below the meatus.

  • The squamosal enters considerably into the formation of the temporal fossa, and, besides sending the zygomatic process forwards, it sends down behind the meatus auditorius a post-tympanic process which aids to hold in place the otherwise loose tympano-periotic bone.

  • The tympanic forms a tubular meatus auditorius externus directed outwards and slightly backwards.

  • No blood was present at the external urethral meatus.

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Words near meatus in the Dictionary