英语词汇sursum-的发音释义、词根词缀、结构分析、同源词、词频及词根记忆法-英语词根词缀词典

sursum-|sɜːsəm-|formative element [f. L. sursum from below, up] used in terms in Ophthalm., as sursumˈduction [a. F. sursumduction (G. T. Stevens 1886, in Arch. d'Ophtalm. VI. 545): see duction], vertical movement upwards of one eye alone; the degree to which this action occurs; sursumˈvergence [L. vergentia (f. vergere to bend, turn): see -ence], the simultaneous movement of one eye upwards and the other downwards, classified as left or right according to which eye moves upward; the degree to which this motion occurs; sursumˈversion [L. version-em, f. vertere to turn: see -ion], the parallel upward movement of both eyes.1893G. E. de Schweinitz Dis. Eye ii. 76 *Sursumduction, or the power of uniting the image of the candle flame, seen through a prism placed with its base downward before one eye, with the image of the same object as seen by the other eye, is ascertained by beginning the trial with a weak prism..and gradually increasing its strength.1949S. Duke-Elder Text-bk. Ophthalm. IV. xlv. 3814 Depending on whether the [eye] movement is in, out, up or down, the terms adduction, abduction, supraduction (sursumduction) and infraduction (deorsumduction) are employed.1975M. M. Parks Ocular Motility & Strabismus xviii. 149/1 Dissociated double hyper⁓deviation is synonymous with alternating sursumduction which describes the upturning movement of each eye as the cover-uncover test is performed.1897A. Duane New Classification of Motor Anomalies of Eye 38 The *sursumvergence, i.e., the amount by which the eyes can diverge in a vertical plane, is determined by the strength of prism placed up or down before the eyes, which the latter can overcome when looking at a distant object.1962H. W. Brown in G. M. Haik Strabismus (Symposium N. Orleans Acad. Ophthalm.) xii. 243 The normal limits of sursumvergence are small.1974Burian & von Noorden Binocular Vision & Ocular Motility xiii. 207/2 In some texts the normal limits for distance fixation are given as..3Δ to 4Δ for sursumvergence and deorsumvergence.1897A. Duane New Classification of Motor Anomalies of Eye 68 Explanation of the conditions..may be had by assuming a weakness of deorsumversion in the former case and of *sursumversion in the latter.1975M. M. Parks Ocular Motility & Strabismus ii. 14/2 Vertical versions are supraversion (sursumversion) and infraversion (deorsumversion).

sursum- /ˈsə:səm/ combining form.

ORIGIN: from Latin sursum.

Ophthalmology. Upwards.

DERIVATIVE sursumˈduction noun (the degree of) vertical movement upwards of one eye alone L19.
sursumˈvergence noun (the degree of) simultaneous movement of one eye upwards and the other downwards L19.
sursumˈversion noun the parallel upward movement of both eyes L19.

sursum-
combining form
Etymology: Latin susum, sursum under, from below, upwards, from subs- (variant of sub-) + versum, neuter of versus, past participle of vertere to turn — more at worth
: upward
< sursumvergence >

词汇	sursum-
词根词缀	OED SOED Webster sursum-\|sɜːsəm-\|formative element [f. L. sursum from below, up] used in terms in Ophthalm., as sursumˈduction [a. F. sursumduction (G. T. Stevens 1886, in Arch. d'Ophtalm. VI. 545): see duction], vertical movement upwards of one eye alone; the degree to which this action occurs; sursumˈvergence [L. vergentia (f. vergere to bend, turn): see -ence], the simultaneous movement of one eye upwards and the other downwards, classified as left or right according to which eye moves upward; the degree to which this motion occurs; sursumˈversion [L. version-em, f. vertere to turn: see -ion], the parallel upward movement of both eyes.1893G. E. de Schweinitz Dis. Eye ii. 76 Sursumduction, or the power of uniting the image of the candle flame, seen through a prism placed with its base downward before one eye, with the image of the same object as seen by the other eye, is ascertained by beginning the trial with a weak prism..and gradually increasing its strength.1949S. Duke-Elder Text-bk. Ophthalm.* IV. xlv. 3814 Depending on whether the [eye] movement is in, out, up or down, the terms adduction, abduction, supraduction (sursumduction) and infraduction (deorsumduction) are employed.1975M. M. Parks Ocular Motility & Strabismus xviii. 149/1 Dissociated double hyper⁓deviation is synonymous with alternating sursumduction which describes the upturning movement of each eye as the cover-uncover test is performed.1897A. Duane New Classification of Motor Anomalies of Eye 38 The sursumvergence, i.e., the amount by which the eyes can diverge in a vertical plane, is determined by the strength of prism placed up or down before the eyes, which the latter can overcome when looking at a distant object.1962H. W. Brown in G. M. Haik Strabismus* (Symposium N. Orleans Acad. Ophthalm.) xii. 243 The normal limits of sursumvergence are small.1974Burian & von Noorden Binocular Vision & Ocular Motility xiii. 207/2 In some texts the normal limits for distance fixation are given as..3Δ to 4Δ for sursumvergence and deorsumvergence.1897A. Duane New Classification of Motor Anomalies of Eye 68 Explanation of the conditions..may be had by assuming a weakness of deorsumversion in the former case and of sursumversion in the latter.1975M. M. Parks Ocular Motility & Strabismus* ii. 14/2 Vertical versions are supraversion (sursumversion) and infraversion (deorsumversion). sursum- /ˈsə:səm/ combining form. ORIGIN: from Latin sursum. Ophthalmology. Upwards. DERIVATIVE sursumˈduction noun (the degree of) vertical movement upwards of one eye alone L19. sursumˈvergence noun (the degree of) simultaneous movement of one eye upwards and the other downwards L19. sursumˈversion noun the parallel upward movement of both eyes L19. sursum- combining form Etymology: Latin susum, sursum under, from below, upwards, from subs- (variant of sub-) + versum, neuter of versus, past participle of vertere to turn — more at worth : upward < sursumvergence >
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