fourth cranial nerve

/fɔrθ ˌkreɪniəl nərv/
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Other forms: fourth cranial nerves

Definitions of fourth cranial nerve
  1. noun
    either of the two cranial nerves on either side that control the superior oblique muscles of the eyes
    synonyms: trochlear, trochlear nerve, trochlearis
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    type of:
    cranial nerve
    any of the 12 paired nerves that originate in the brain stem
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