| acromyotonia | (noun) myotonia of the extremities only; causes spastic deformity of the hand or foot | - |
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| amyotonia | (noun) lack of normal muscular tension or tonus | Synonyms: atonia, atonicity, atony |
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| angiotonin | (noun) any of several vasoconstrictor substances (trade name Hypertensin) that cause narrowing of blood vessels | Synonyms: angiotensin, Hypertensin |
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| antiproton | (noun) an unstable negatively charged proton; the antiparticle of a proton | - |
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| cotoneaster | (noun) any shrub of the genus Cotoneaster: erect or creeping shrubs having richly colored autumn foliage and many small white to pinkish flowers followed by tiny red or black fruits | - |
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| croton | (noun) tropical Asiatic shrub; source of croton oil | Synonyms: Croton tiglium |
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| (noun) grown in many varieties for their brightly colored foliage; widely cultivated as a houseplant | Synonyms: Codiaeum variegatum |
| crotonbug | (noun) small light-brown cockroach brought to United States from Europe; a common household pest | Synonyms: Blattella germanica, Croton bug, German cockroach, water bug |
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| hypotonia | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonicity, hypotonus |
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| hypotonicity | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonia, hypotonus |
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| (noun) (of a solution) the extent to which a solution has a lower osmotic pressure than some other | - |
| hypotonus | (noun) (of muscular tissue) the state of being hypotonic | Synonyms: hypotonia, hypotonicity |
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| kiloton | (noun) one thousand tons | - |
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| (noun) a measure of explosive power (of an atomic weapon) equal to that of 1000 tons of TNT | - |
| monotone | (noun) an unchanging intonation | Synonyms: drone, droning |
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| (noun) a single tone repeated with different words or different rhythms (especially in rendering liturgical texts) | - |
| monotony | (noun) the quality of wearisome constancy, routine, and lack of variety | Synonyms: humdrum, sameness |
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| (noun) constancy of tone or pitch or inflection | - |
| motoneuron | (noun) a neuron conducting impulses outwards from the brain or spinal cord | Synonyms: efferent neuron, motor nerve fiber, motor neuron |
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| myotonia | (noun) abnormally long muscular contractions; slow relaxation of a muscle after a contraction | - |
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| neotony | (noun) the state resulting when juvenile characteristics are retained by the adults of a species | - |
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| opisthotonos | (noun) severe spasm in which the back arches and the head bends back and heels flex toward the back | - |
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| photon | (noun) a quantum of electromagnetic radiation; an elementary particle that is its own antiparticle | - |
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| polyptoton | (noun) repetition of a word in a different case or inflection in the same sentence | - |
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| proton | (noun) a stable particle with positive charge equal to the negative charge of an electron | - |
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| serotonin | (noun) a neurotransmitter involved in e.g. sleep and depression and memory | Synonyms: 5-hydroxytryptamine |
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