BN


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barn

(bărn) [Special use of barn],

bn

A unit of area, employed chiefly in chemistry and physics, approximating the size of the nucleus of a uranium atom. One barn = 10-24 sq cm.
Medical Dictionary, © 2009 Farlex and Partners

BN

Abbrev. for Bachelor of Nursing.
Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005