orbiculus

orbiculus is a topic covered in the Taber's Medical Dictionary.

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(or-bik′yŭ-lŭs)
(or-bik′yŭ-lī″)
pl. orbiculi [L. orbiculus, small circle, roller, pulley]
A muscle surrounding an orifice; a sphincter muscle.

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(or-bik′yŭ-lŭs)
(or-bik′yŭ-lī″)
pl. orbiculi [L. orbiculus, small circle, roller, pulley]
A muscle surrounding an orifice; a sphincter muscle.

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