rictus

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ric·tus

 (rĭk′təs)
n. pl. rictus or ric·tus·es
1. A gaping grimace: "his mouth gaping in a kind of rictus of startled alarm" (Richard Adams).
2.
a. The expanse of an open mouth or a bird's beak.
b. The corner of the mouth or the fleshy area where the upper and lower mandibles of a bird meet.

[Latin, from past participle of ringī, to gape.]

ric′tal 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.

rictus

(ˈrɪktəs)
n, pl -tus or -tuses
1. (Biology) the gap or cleft of an open mouth or beak
2. a fixed or unnatural grin or grimace, as in horror or death
[C18: from Latin, from ringī to gape]
ˈrictal adj
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

ric•tus

(ˈrɪk təs)

n., pl. -tus, -tus•es.
1. the gaping or opening of the mouth.
2. a gaping grin.
3. the gape of the mouth of a bird.
[1750–60; < Latin: wide-open mouth =rig-, variant s. of ringī to open the mouth wide + -tus suffix of v. action]
ric′tal, adj.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

rictus

the opening of the mouth, especially in a grimace or expression of pain.
See also: Body, Human
-Ologies & -Isms. Copyright 2008 The Gale Group, Inc. All rights reserved.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rictus - a gaping grimace
gape - an expression of openmouthed astonishment
Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.
Translations

rictus

[ˈrɪktəs] N (rictus or rictuses (pl)) → rictus m
Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

rictus

n (Anat, Zool) → Sperrweite f
Collins German Dictionary – Complete and Unabridged 7th Edition 2005. © William Collins Sons & Co. Ltd. 1980 © HarperCollins Publishers 1991, 1997, 1999, 2004, 2005, 2007