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arsenious composed of or involving arsenic, esp. in its trivalent state.
ars gratia artis art for the sake of art (Latin).
arson the illegal act of burning buildings, another's or one's own, for malicious purposes or to claim insurance money.
-art variant of -ard.
art a fine skill that has resulted from natural ability, practice, or study. [4 definitions]
art. abbreviation of "article," in grammar, the words "a," "an," and "the," which are used with nouns and act to limit the nouns' applications. (See "definite article," "indefinite article.")
art deco (sometimes cap.) a decorative style of the 1920s and 1930s that featured geometric shapes and bold colors and that was applied to furniture, glass and plastic ware, graphic productions, architecture, and the like.
artefact variant of artifact.
Artemis in Greek mythology, a goddess associated with the moon, virginity, and hunting; Diana.
arterial of, relating to, or similar to the arteries. [3 definitions]
arterialize to change (blood from the veins) into blood for the arteries through the addition of oxygen in the lungs.
arteriography examination of the arteries by x-ray after injection with a radiopaque dye.
arteriole a blood vessel located between an artery and a capillary.
arteriosclerosis a chronic disease of the arteries in which inelastic and thickened vessel walls reduce blood flow.
artery a vessel that carries blood away from the heart. (Cf. vein.) [2 definitions]
artesian well a well dug through impermeable strata, reaching water that is under pressure.
artful cunning or crafty. [3 definitions]
arthralgia pain in one or more of one's joints.
arthritis a disease of the joints in which they become painfully inflamed.
arthro- joint.
arthropod a class of invertebrates with hard, segmented bodies and jointed legs, including insects, spiders, crustaceans, and myriapods.