Relaxation, flaccidity, or lack of tone or tension. SYN: atonia, atonicity. [G. atonia, languor]
- postpartum a. a. of the uterine walls after childbirth. SYN: metratonia.
- uterine a. failure of the myometrium to contract after delivery of the placenta; associated with excessive bleeding from the placental implantation site.

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at·o·ny 'at-ən-ē or ato·nia (')ā-'tō-nē-ə n, pl -nies or -ni·as lack of physiological tone esp. of a contractile organ

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a state in which muscles are floppy, lacking their normal elasticity.
atonic adj.

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at·o·ny (atґə-ne) [L. atonia, from a-1 + Gr. tonos tension] lack of normal tone or strength, such as in a muscle deprived of its innervation. Called also atonia and atonicity. atonic adj

Medical dictionary. 2011.

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Look at other dictionaries:

  • Atony — At o*ny, n. [Gr. ? slackness; a priv. + ? tone, strength, ? to stretch: cf. F. atonie.] (Med.) Want of tone; weakness of the system, or of any organ, especially of such as are contractile. [1913 Webster] …   The Collaborative International Dictionary of English

  • atony — [a′tə nē] n. [Fr atonie < LL atonia < Gr atonia, languor < a , not + tonos, tone < teinein, to stretch: see THIN] lack of bodily tone or muscle tone …   English World dictionary

  • Atony — In medicine, atony (or atonia , or atonic ) refers to a muscle that has lost its strength. It is frequently associated with the conditions Atonic seizure, Atonic colon, Uterine atony, Gastrointestinal atony (occurs postoperatively) and choreatic… …   Wikipedia

  • atony — noun Etymology: Late Latin atonia, from Greek, from atonos without tone, from a + tonos tone Date: 1693 lack of physiological tone especially of a contractile organ …   New Collegiate Dictionary

  • atony — /at n ee/, n. 1. Pathol. lack of tone or energy; muscular weakness, esp. in a contractile organ. 2. Phonet. lack of stress accent. Also, atonia /euh toh nee euh, ay toh /. [1685 95; < LL atonia < Gk, deriv. of átonos unaccented, languid, lit.,… …   Universalium

  • atony — noun Lack of muscle tone; flaccidity or atonia See Also: atonic …   Wiktionary

  • atony — Synonyms and related words: adynamia, anemia, blah feeling, bloodlessness, cachexia, cachexy, cowardice, debilitation, debility, dullness, etiolation, faintness, fatigue, feebleness, flabbiness, flaccidity, impotence, languishment, languor,… …   Moby Thesaurus

  • atony — at·o·ny || ætÉ™nɪ n. muscular weakness; limpness; lack of stress (Phonetics) …   English contemporary dictionary

  • atony — n. (Med.) Weakness, debility, languor, exhaustion, prostration, asthenia, astheny, atonicity …   New dictionary of synonyms

  • atony — at·o·ny …   English syllables

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