miosis

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mi·o·sis

also my·o·sis (mī-ō′sĭs)
n. pl. mi·o·ses (-sēz) also my·o·ses
Constriction of the pupil of the eye, resulting from a normal response to an increase in light or caused by certain drugs or pathological conditions.

[Greek mūein, to close the eyes + -osis.]

miosis

(maɪˈəʊsɪs) or

myosis

n, pl -ses (-siːz)
1. (Pathology) excessive contraction of the pupil of the eye, as in response to drugs
2. (Biology) a variant spelling of meiosis1
[C20: from Greek muein to shut the eyes + -osis]
miotic, myotic adj, n

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.miosis - (genetics) cell division that produces reproductive cells in sexually reproducing organismsmiosis - (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)
genetic science, genetics - the branch of biology that studies heredity and variation in organisms
anaphase - the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindle
cell division, cellular division - the process in reproduction and growth by which a cell divides to form daughter cells
cytokinesis - organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cells
karyokinesis - organic process consisting of the division of the nucleus of a cell during mitosis or meiosis
metaphase - the second stage of meiosis
nondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cells
prophase - the first stage of meiosis
segregation - (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametes
telophase - the final stage of meiosis when the chromosomes move toward opposite ends of the nuclear spindle
2.miosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallermiosis - reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smaller
Translations

mi·o·sis

n. miosis, contracción excesiva de la pupila.