(redirected from rictuses)
Also found in: Thesaurus, Medical, Encyclopedia.


n. pl. rictus or ric·tus·es
1. A gaping grimace: "his mouth gaping in a kind of rictus of startled alarm" (Richard Adams).
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.


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


(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.


the opening of the mouth, especially in a grimace or expression of pain.
See also: Body, Human
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.rictus - a gaping grimace
gape - an expression of openmouthed astonishment


[ˈrɪktəs] N (rictus or rictuses (pl)) → rictus m


n (Anat, Zool) → Sperrweite f