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crissum

[kris-uh m] /ˈkrɪs əm/
noun, plural crissa
[kris-uh] /ˈkrɪs ə/ (Show IPA).
Ornithology
1.
the region surrounding the cloacal opening beneath the tail of a bird.
2.
the feathers of this region collectively.
Origin
1870-1875
1870-75; < New Latin, equivalent to Latin criss(āre) to move the haunches + -um noun suffix
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for crissa

crissum

/ˈkrɪsəm/
noun (pl) -sa (-sə)
1.
the area or feathers surrounding the cloaca of a bird
Derived Forms
crissal, adjective
Word Origin
C19: from New Latin, from Latin crissāre to move the haunches
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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8
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