chiasma

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chi·as·ma

 (kī-ăz′mə) also chi·asm (kī′ăz′əm)
n. pl. chi·as·ma·ta (-mə-tə) or chi·as·mas also chi·asms
1. Anatomy A crossing or intersection of two tracts, as of nerves or ligaments.
2. Genetics The point of contact between paired chromatids during meiosis, resulting in a cross-shaped configuration and representing the cytological manifestation of crossing over.

[Greek khīasma, cross-piece, from khīazein, to mark with an X, from khei, khī, chi (from the letter's shape).]

chi·as′mal, chi·as′mic, chi′as·mat′ic (-măt′ĭk) adj.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

chiasma

(kaɪˈæzmə) or

chiasm

n, pl -mas, -mata (-mətə) or -asms
1. (Genetics) cytology the cross-shaped connection produced by the crossing over of pairing chromosomes during meiosis
2. (Anatomy) anatomy the crossing over of two parts or structures, such as the fibres of the optic nerves in the brain
[C19: from Greek khiasma wooden crosspiece, from khiazein to mark with an X, from khi chi1]
chiˈasmal, chiˈasmic adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

chi•as•ma

(kaɪˈæz mə)

also chi•asm

(ˈkaɪ æz əm)

n., pl. -as•mas, -as•ma•ta (-ˈæz mə tə) also -asms.
1. Anat. a crossing or decussation. Compare optic chiasma.
2. a point of overlap of paired chromatids at which fusion and exchange of genetic material take place during prophase of meiosis.
[1830–40; < Greek: crosspiece of wood, cross-bandage =chi chi + -asma n. suffix]
chi•as′mal, chi•as′mic, chi`as•mat′ic (-ˈmæt ɪk) adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.chiasma - an intersection or crossing of two tracts in the form of the letter X
anatomical structure, bodily structure, body structure, complex body part, structure - a particular complex anatomical part of a living thing; "he has good bone structure"
chiasma opticum, optic chiasm, optic chiasma - the crossing of the optic nerves from the two eyes at the base of the brain
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

chi·asm

, chiasma
n. quiasma.
1. cruzamiento de dos vías o conductos;
2. punto de cruzamiento de las fibras de los nervios ópticos.
English-Spanish Medical Dictionary © Farlex 2012
References in periodicals archive ?
Joudah exploits the fuzziness of language from the outset, toying with false chiasms and faux epigrams like "the falafel of truth / and the truth of falafel." Bathetic, ironic, and obscure by turns, the books first section complicates the "common" with roundabout epithets like "the grackle, common, / indigo, icteric-eyed New World // passerine." Associations that hinge on sonic rather than semiotic connections ("not chasm but chiasm") and moments of ambiguous syntax foreground words as words, functioning originally in their "status as feeling." The question of origins, too, recurs throughout Footnotes.
From the fluid and affective conjoining of these various chiasms, these multiple and connected opsigns and sonsigns, viewers viscerally sense "the coiling over of the visible upon the seeing body."
The development towards this complex and multi-leveled concept is carried forward through the analysis of the three chiasms which Weinman sees as central to Woolf's representation of the crisis of the subject, insofar as they point "to the impossibility of stable subjectivity" (23) The dynamics originating from the model of the chiasmus, with its relations of "mutual interdependence" (14), further clarifies the author's talent for investigations which attempt to go beyond given dichotomies and definitions to propose more integrated views of central issues such as the formation of individuality and its relation to body and language.
Sentence by sentence, paragraph by paragraph, section by section, Heil connects words and phrases to detect chiasms throughout Hebrews.
had already shown his "chiastic hand." He now examines the letter "through the lens of worship," relentlessly pursuing chiasms and constantly paraphrasing the text.
"Reading Chiasms." Of Minimal Things: Studies on the Notion of Relation.
* Free book on CD: "The Bible as Literature: A Study of Hebrew Poetry." Emphasis is on repetitions, parallelisms, brackets, chiasms. NT examples included.
Simple chiasms are common in many languages, and even though the layperson may not be familiar with the term chiasmus, the wordplay is easily recognized: "Ajax, who wears his wit in his belly and his guts in his head" (Tro 2.1.73-4).
Consequently, we cannot speak about tautology and one single chiastic transformation, but the relation between the two figures is unfolded in an 'infinite' number of chiasms. Since both of them function as a swinging mirror, playing them off (8) and turning them against each other, the two mirrors will reflect each other ad infinitum.