Contraction - definition examples english, Definition. in grammar and morphology, a contraction is a shortened form of a word or group of words, with the missing letters usually marked by an apostrophe.. Premature atrial contractions (pacs) - cardiachealth, Premature atrial contractions (pacs) are amongst the most common forms of arrhythmias. it is due to the premature discharge of an electrical impulse in the atrium. Us business cycle expansions contractions, Business cycle expansion and contraction dates for the united states economy.
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