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.
Compare the fractions 3/7 and 1/2.The first cross-product is the product of the first numerator and the second denominator: 3 Ã 2 = 6. The second cross-product is the product of the second numerator and the first denominator: 7 Ã 1 = 7. Since the second cross-product is larger, the second fraction is larger.