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miosisenUK
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 myosisn, pl -ses (-siːz) 1. (Pathology) excessive contraction of the pupil of the eye, as in response to drugs2. (Biology) a variant spelling of meiosis1[C20: from Greek muein to shut the eyes + -osis] miotic, myotic adj, nmi•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, myosisabnormal constriction of the pupil of the eye, caused by drugs or illness. Cf. mydriasis. — miotic, myotic, adj.See also: EyesThesaurus| Noun | 1. |  miosis - (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)meiosis, reduction divisiongenetic science, genetics - the branch of biology that studies heredity and variation in organismsanaphase - the stage of meiosis or mitosis when chromosomes move toward opposite ends of the nuclear spindlecell division, cellular division - the process in reproduction and growth by which a cell divides to form daughter cellscytokinesis - organic process consisting of the division of the cytoplasm of a cell following karyokinesis bringing about the separation into two daughter cellskaryokinesis - organic process consisting of the division of the nucleus of a cell during mitosis or meiosismetaphase - the second stage of meiosisnondisjunction - meiosis in which there is a failure of paired homologous chromosomes to separate; results in an abnormal number of chromosomes in the daughter cellsprophase - the first stage of meiosissegregation - (genetics) the separation of paired alleles during meiosis so that members of each pair of alleles appear in different gametestelophase - 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 smallerlight reflex, pupillary reflex, myosisinborn reflex, innate reflex, instinctive reflex, physiological reaction, reflex, reflex action, reflex response, unconditioned reflex - an automatic instinctive unlearned reaction to a stimulus |
TranslationsmiosisenUK
miosis[mī′ō·səs] (physiology) Contraction of the pupil of the eye. miosisenUK
miosis [mi-o´sis] excessive contraction of the pupil.mi·o·sis (mī-ō'sis), Do not confuse this word with meiosis.1. Contraction of the pupil. 2. Incorrect alternative spelling for meiosis. [G. meiōsis, a lessening] miosis also myosis (mī-ō′sĭs)n. pl. mio·ses (-sēz) 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.miosis Contraction of the pupil.miosis Contraction of the pupil. Cf Mydriasis. mi·o·sis (mī-ō'sis) 1. Contraction of the pupil. 2. Incorrect alternative spelling for meiosis. [G. meiōsis, a lessening]miosis Constriction of the pupil.miosisContraction of the pupil or condition in which the pupil is very small (2 mm or less in diameter). It can be brought about by a spasm of the sphincter muscle or by the effect of a miotic drug (e.g. eserine, neostigmine, pilocarpine), or in certain spinal diseases or any stimulation of the parasympathetic supply to the eye. Miosis occurs naturally when doing close work or when stimulated by light. Note: also spelt myosis. See corneal reflex; pupil light reflex; baring of the blind spot; Horner's syndrome.mi·o·sis (mī-ō'sis) Contraction of the pupil. [G. meiōsis, a lessening]miosisenUK
Related to miosis: meiosis, Horner's syndromeSynonyms for miosisnoun (genetics) cell division that produces reproductive cells in sexually reproducing organismsSynonyms- meiosis
- reduction division
Related Words- genetic science
- genetics
- anaphase
- cell division
- cellular division
- cytokinesis
- karyokinesis
- metaphase
- nondisjunction
- prophase
- segregation
- telophase
noun reflex contraction of the sphincter muscle of the iris in response to a bright light (or certain drugs) causing the pupil to become smallerSynonyms- light reflex
- pupillary reflex
- myosis
Related Words- inborn reflex
- innate reflex
- instinctive reflex
- physiological reaction
- reflex
- reflex action
- reflex response
- unconditioned reflex
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