meatus (redirected from ethmoidal meatus)

me·a·tus  (m-ts)

n. pl. me·a·tus·es or meatus

A body opening or passage, such as the opening of the ear or the urethral canal.

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[Latin metus, passage, from past participle of mere, to pass; see mei-¹ in Indo-European roots.]

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meatus [mɪˈeɪtəs]

n pl -tuses, -tus

(Life Sciences & Allied Applications / Anatomy) Anatomy a natural opening or channel, such as the canal leading from the outer ear to the eardrum

[from Latin: passage, from meāre to pass]

Thesaurus

Noun

1.

meatus - a natural body passageway passageway, passage - a path or channel or duct through or along which something may pass; "the nasal passages" acoustic meatus, auditory canal, auditory meatus, ear canal, external auditory canal - either of the passages in the outer ear from the auricle to the tympanic membrane nasal meatus - the passages in the nasal cavity formed by the projections of the nasal conchae