This article examines the clinical, pathologic, and radiologic features of pulmonary immaturity, the impact of evolving therapeutic strategies, and the changing face of chronic lung disease of prematurity.
intr.v. cross-mulÂ·tiÂ·plied, cross-mulÂ·tiÂ·plyÂ·ing, cross-mulÂ·tiÂ·plies. To multiply the numerator of one of a pair of fractions by the denominator of the other.
multiplication. n. 1. (Mathematics) an arithmetical operation, defined initially in terms of repeated addition, usually written a Ã b, a.b, or ab, by which the product of two quantities is calculated: to multiply a by positive integral b is to add a to itself b times.