One or a few chromosomes above or below the normal chromosome number. For example, three number 21 chromosomes or trisomy 21 (characteristic of Down syndrome) is a form of aneuploidy.
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State of being aneuploid.
- partial a. a type of mosaicism in which some cells have a normal number of chromosomes and some have an abnormal number.

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the condition in which the chromosome number of a cell is not an exact multiple of the normal basic (haploid) number. See monosomy, trisomy; compare euploidy.
aneuploid adj. n.

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an·eu·ploi·dy (anґu-ploi″de) [an-1 + euploidy] any deviation from an exact multiple of the haploid number of chromosomes, whether fewer (hypoploidy, as in Turner syndrome) or more (hyperploidy, as in Down syndrome).

Medical dictionary. 2011.

Look at other dictionaries:

  • Aneuploidy — Classification and external resources ICD 10 Q90 Q98 ICD 9 …   Wikipedia

  • aneuploidy — aneuploidy. См. анеуплоидия. (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) …   Молекулярная биология и генетика. Толковый словарь.

  • aneuploidy — (n.) abnormal number of chromosomes, 1934, from aneuploid (1931), Modern Latin, coined 1922 by G. Täckholm from AN (Cf. an ) (1) not + euploid, from Gk. eu well, good (see EU (Cf. eu )) + ploid (comb. form of ploos fold + OID (Cf …   Etymology dictionary

  • aneuploidy — nesubalansuotoji poliploidija statusas T sritis augalininkystė apibrėžtis Nekartotiniai chromosomų rinkinių arba pavienių chromosomų pakitimai pagrindinio (haploidinio) jų skaičiaus atžvilgiu. atitikmenys: angl. aneuploidy; heteroploidy rus.… …   Žemės ūkio augalų selekcijos ir sėklininkystės terminų žodynas

  • aneuploidy — noun see aneuploid …   New Collegiate Dictionary

  • aneuploidy — an·eu·ploi·dy (ănʹyə ploi dē) n. The state or condition of being aneuploid. * * * …   Universalium

  • aneuploidy — noun The condition of being aneuploid; the state of possessing chromosome number than is not an exact multiple of the haploid number. See Also: aneuploid, aneuploidic …   Wiktionary

  • aneuploidy — an·eu·ploidy …   English syllables

  • aneuploidy — n. the condition in which the chromosome number of a cell is not an exact multiple of the normal basic (haploid) number. See: monosomy, trisomy Compare: euploidy Derivatives: aneuploid adj., n …   The new mediacal dictionary

  • aneuploidy — /ˈænjuplɔɪdi/ (say anyoohploydee) noun abnormality in the number of chromosomes …   Australian English dictionary

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