In biologic classification, the next division below the phylum (or subphylum) and above the order. [L. classis, a c., division]
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Clomethiazole Acute Stroke Study
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class 'klas n, often attrib a group, set, or kind marked by common attributes or a common attribute esp a major category in biological taxonomy ranking above the order and below the phylum or division <the \class Mammalia>
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(klas) 1. a taxonomic category subordinate to a phylum (or subphylum) and superior to an order. 2. in statistics, a subgroup of a population for which certain variables measured for individuals in the population fall within specific limits.Medical dictionary. 2011.