myosis


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my·o·sis

 (mī-ō′sĭs)
n.
Variant of miosis.

myosis

(maɪˈəʊsɪs)
n, pl -ses (-siːz)
(Pathology) a variant spelling of miosis

mi•o•sis

or my•o•sis

(maɪˈoʊ sɪs)

n.
excessive constriction of the pupil of the eye.
Compare mydriasis.
[1810–20; variant of myosis < Greek mý(ein) to shut (the eyes) + -osis]

miosis, myosis

abnormal constriction of the pupil of the eye, caused by drugs or illness. Cf. mydriasis. — miotic, myotic, adj.
See also: Eyes
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.myosis - an acute infectious disease occurring in epidemic form and featuring paroxysms of pain (usually in the chest)
epidemic disease - any infectious disease that develops and spreads rapidly to many people
2.myosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallermyosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
References in periodicals archive ?
IN NEUROLOGIC EXAMINATION; HE HAD PTOSIS AND MYOSIS IN THE LEFT EYE.
The patient developed temporary Horner's syndrome postoperatively, characterized by ipsilateral ptosis, myosis, and asymmetry of the lower eyelid, with full recovery within the first month postoperatively.
Then 0.1 mL of acetylcholine chloride (Miochol-e, 20 mg/mL, Novartis) was used to induce myosis in case 2 to reduce the risk of posterior dislocation of DEC roll.
Enophthalmos, increased amplitude of accommodation, retraction in the ipsilateral eyelid, alteration in lacrimal viscosity, and heterochromia in patients aged below 2 years may accompany these findings in addition to myosis, ptosis, and ipsilateral sweating disorder in the face (2).
One moment he explained to a couple of writers just exactly what the hell hog jowls were, and an hour later candidly revealed his higher education when Holder was explaining how he achieved a matte finish on the Sure-Shot calls "because the molecules adhere through myosis or mitosis or whatever." I caught Worley nodding and listening and muttering, "yeah, that would be mitosis."