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fissural

 - 6 dictionary results

fis⋅sure

[fish-er] noun, verb, -sured, -sur⋅ing.
–noun
1. a narrow opening produced by cleavage or separation of parts.
2. cleavage (def. 1).
3. Anatomy. a natural division or groove in an organ, as in the brain.
–verb (used with object)
4. to make fissures in; cleave; split.
–verb (used without object)
5. to open in fissures; become split.

Origin:
1375–1425; late ME < L fissūra cleaving, cleft, fissure, equiv. to fiss(us) divided (see fissi- ) + -ūra -ure


fis⋅su⋅ral, adjective
fis⋅sure⋅less, adjective
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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Word Origin & History

fissure 
c.1400, from O.Fr. fissure, from L. fissura "a cleft," from root of findere "to split, cleave," from PIE *bhi-n-d-, from base *bheid- "to split" (cf. Skt. bhinadmi "I cleave," O.H.G.bizzan "to bite," O.E.bita "a piece bitten off,morsel," O.N. beita "tohunt with dogs," beita"pasture, food").
Online Etymology Dictionary, © 2001 Douglas Harper
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Medical Dictionary

Main Entry: fis·sur·al
Pronunciation: 'fish-&-r&l, Brit also 'fis(h)-yur-&l
Function: adjective
: of or relating to afissure

Main Entry: fis·sure
Pronunciation: 'fish-&r, Brit also 'fish-yur
Function: noun
1 : a natural cleft between body parts or in thesubstance of an organ: as a : any of several clefts separating the lobes of the liver b : any of various clefts between bones or parts of bones in the skull c : any of the deep clefts of the brain; especially : one of those located at points of elevation in the walls of the ventricles —compare SULCUS d : ANTERIOR MEDIANFISSURE; also : POSTERIOR MEDIAN SEPTUM
2 : a break or slit intissue usually at the junction of skin and mucous membrane <fissure of the lip>
3 : a linear developmental imperfection in the enamel of a tooth —fis·sured /'fish-&rd, Brit also 'fish-yurd/ adjective
Merriam-Webster's Medical Dictionary, © 2002 Merriam-Webster, Inc.
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Medical Dictionary

fissure fis·sure (fĭsh'ər)
n.

  1. A deep furrow, cleft, or slit.

  2. A developmental break or fault in the enamel of a tooth.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Science Dictionary
fissure   (fĭsh'ər)  Pronunciation Key 
A long, narrow crack or opening in the face of a rock. Fissures are often filled with minerals of a different type from those in the surrounding rock.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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