decussationn.

/dɛkʌˈseɪʃən/

Etymology: < Latin decussātiōn-em, noun of action < decussāre : see decuss v. and -ation suffix.

a. Crossing (of lines, rays, fibres, etc.) so as to form a figure like the letter X; intersection.

ΘΚΠ

the world > space > relative position > fact or condition of being transverse > intersection > [noun]

overcastinga1398

intersecation1412

intersection1559

interfering1562

decussation1656

transversion1656

intercision1726

incidency1789

meshing1955

1656 T. Blount Glossographia Decussation, a division, cut, sawen or carved, after the form of four lines drawn a cross by one Center star-wise, so it maketh eight even portions.

1658 Sir T. Browne Garden of Cyrus i, in Hydriotaphia: Urne-buriall 95 The Letter χ, that is the Emphaticall decussation, or fundamentall figure.

1662 J. Evelyn Sculptura (1769) 90 Performed in single and masterly strokes, without decussations, and cross hatchings.

1672 I. Newton Let. 10 Dec. in Corr. (1959) I. 250 By the iterated decussations of the rays objects will be rendered less distinct.

1713 W. Derham Physico-theol. iv. ii. 95 A Coalition or Decussation of the Optick Nerves.

1839–47 Todd's Cycl. Anat. & Physiol. III. 480/1 The point at which the decussation [of nerve-fibres in the brain] takes place is about ten lines below the margin of the pons Varolii.

b. Rhetoric. An arrangement of clauses, etc. in which corresponding terms occur in reverse order; chiasmus.

ΘΚΠ

society > leisure > the arts > literature > style of language or writing > figure of speech > figures of structure or thought > [noun] > inversion > parallelism or contrast in form AB-BA

decussation1841

chiasm1868

chiasmus1871

1841 Tait's Edinb. Mag. 8 561 They have..become weary of these pretty grammatico-metrical cuttings and decussations.

c. decussation of the pyramids, the point of crossing of fibres of the left and right anterior pyramids.

ΚΠ

1869 T. H. Huxley Lessons Elem. Physiol. (ed. 3) xi. 303 At the lower and front part of the medulla oblongata, these [efferent impulses]..cross over; and the white fibres which convey them are seen passing obliquely from left to right and from right to left in what is called the decussation of the anterior pyramids.

2. [Apparently used for decussion n.] Striking off.

ΚΠ

1655 H. L'Estrange Reign King Charles 117 He yeilded his head to de-cussation, to the striking off.

This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2022).

单词	decussation
释义	decussationn. /dɛkʌˈseɪʃən/ Etymology: < Latin decussātiōn-em, noun of action < decussāre : see decuss v. and -ation suffix. 1. a. Crossing (of lines, rays, fibres, etc.) so as to form a figure like the letter X; intersection. ΘΚΠ the world > space > relative position > fact or condition of being transverse > intersection > [noun] overcastinga1398 intersecation1412 intersection1559 interfering1562 decussation1656 transversion1656 intercision1726 incidency1789 meshing1955 1656 T. Blount Glossographia Decussation, a division, cut, sawen or carved, after the form of four lines drawn a cross by one Center star-wise, so it maketh eight even portions. 1658 Sir T. Browne Garden of Cyrus i, in Hydriotaphia: Urne-buriall 95 The Letter χ, that is the Emphaticall decussation, or fundamentall figure. 1662 J. Evelyn Sculptura (1769) 90 Performed in single and masterly strokes, without decussations, and cross hatchings. 1672 I. Newton Let. 10 Dec. in Corr. (1959) I. 250 By the iterated decussations of the rays objects will be rendered less distinct. 1713 W. Derham Physico-theol. iv. ii. 95 A Coalition or Decussation of the Optick Nerves. 1839–47 Todd's Cycl. Anat. & Physiol. III. 480/1 The point at which the decussation [of nerve-fibres in the brain] takes place is about ten lines below the margin of the pons Varolii. b. Rhetoric. An arrangement of clauses, etc. in which corresponding terms occur in reverse order; chiasmus. ΘΚΠ society > leisure > the arts > literature > style of language or writing > figure of speech > figures of structure or thought > [noun] > inversion > parallelism or contrast in form AB-BA decussation1841 chiasm1868 chiasmus1871 1841 Tait's Edinb. Mag. 8 561 They have..become weary of these pretty grammatico-metrical cuttings and decussations. c. decussation of the pyramids, the point of crossing of fibres of the left and right anterior pyramids. ΚΠ 1869 T. H. Huxley Lessons Elem. Physiol. (ed. 3) xi. 303 At the lower and front part of the medulla oblongata, these [efferent impulses]..cross over; and the white fibres which convey them are seen passing obliquely from left to right and from right to left in what is called the decussation of the anterior pyramids. 2. [Apparently used for decussion n.] Striking off. ΚΠ 1655 H. L'Estrange Reign King Charles 117 He yeilded his head to de-cussation, to the striking off. This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2022). < n.1655
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