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chalasia cha·la·sia (kə-lā’zē-ə, -zhə) or cha·la·sis (-lā’sĭs)
The inhibition and relaxation of a previously sustained contraction of a muscle or synergistic group of muscles, such as the cardiac sphincter.


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  • Chalazion

    Ophthalmology. sty2 . noun a small cyst on the eyelid resulting from chronic inflammation of a meibomian gland Also called meibomian cyst n. small tumor in the eyelid, 1708, from Greek khalazion, diminutive of khalaza “hail, hailstone; small lump or knot; pimple,” from PIE root *gheled- “hail.”

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    Mineralogy. blue vitriol. noun a blue secondary mineral consisting of hydrated copper sulphate in triclinic crystalline form. Formula: CuSO4.5H2O

  • Chalcedony

    a microcrystalline, translucent variety of quartz, often milky or grayish. noun (pl) -nies a microcrystalline often greyish form of quartz with crystals arranged in parallel fibres: a gemstone. Formula: SiO2 n. c.1300, from Latin calcedonius, in Vulgate translating Greek khalkedon in Rev. xxi:19, found nowhere else. Connection with Chalcedon in Asia Minor “is very doubtful” […]

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