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Possible definitions for abacas
abacus
Calculating instrument that uses beads that slide along a series of wires or rods set in a frame to represent the decimal places. Probably of Babylonian origin, it is the ancestor of the modern digital calculator. Used by merchants in the Middle Ages throughout Europe and the Arabic world, it was gradually replaced by arithmetic based on Hindu-Arabic numerals. Though rarely used in Europe past the 18th cent., it is still used in the Middle East, China, and Japan.
abscess
Localized collection of pus in a cavity on the skin surface or within the body, formed from tissues broken down by white blood cells (leukocytes) in response to inflammation caused by bacteria. A wall develops, separating the thick yellowish pus (formed from broken-down tissues, dead bacteria, and leukocytes) from the extracellular fluid of nearby healthy tissues. Rupture of the abscess allows the pus to escape and relieves swelling and pain. Treatment consists of cutting into the wall to drain the pus and giving antibiotics and perhaps antihistamines. If infective contents enter the bloodstream, they may be carried to surrounding tissues, seeding new abscesses.
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