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单词 extorsion
释义 I. extorsion|ɛkˈstɔːʃən|
[f. L. extorsiōn-em (see extortion n.).]
Outward rotation of a part of the body, esp. of the eye.
1899A. Duane tr. Fuchs's Text-bk. Ophthalmol. (ed. 2) xiv. 578 The inferior rectus..rotates the eye in such a way that the upper extremity of the vertical meridian is depressed to the outside (extorsion).1964S. Duke-Elder Parsons' Dis. Eye (ed. 14) xxviii. 446 An involuntary movement of torsion: intorsion when the upper pole of the cornea rotates nasally, extorsion when temporally.
II. extorsion, -er
obs. ff. of extortion n., -er.
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