Tonic contraction


tonic contraction n.
The sustained contraction of a muscle, as is necessary for maintaining posture.

Read Also:

  • Tonic convulsion

    tonic convulsion n. A convulsion in which muscle contraction is prolonged.

  • Tonic epilepsy

    tonic epilepsy n. A convulsive seizure during which the body is rigid.

  • Tonicity

    noun 1. tonic quality or condition. 2. the state of bodily tone. 3. Physiology. the normal elastic tension of living muscles, arteries, etc., by which the tone of the system is maintained. noun 1. the state, condition, or quality of being tonic 2. (physiol) another name for tonus tonicity to·nic·i·ty (tō-nĭs’ĭ-tē) n. Normal firmness or […]

  • Tonicoclonic

    tonicoclonic ton·i·co·clon·ic (tŏn’ĭ-kō-klŏn’ĭk) adj. Both tonic and clonic. Used of a convulsion or muscular spasms.

  • Tonic pupil

    tonic pupil n. A usually enlarged pupil that responds very slowly to changes in focal length and exposure to light. Also called Piltz sign, Westphal-Piltz pupil.


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