Surgical removal of part of the ribs to allow inward retraction of the chest wall and collapse of a diseased lung.
What Do A.M. And P.M. Stand For?Most English speakers know that a.m. refers to the hours from midnight and noon, and p.m. to the hours from noon and midnight. But what do these ubiquitous abbreviations stand for? The term we associate with the morning, a.m., is an abbreviation the Latin phrase ante merīdiem meaning “before midday”; p.m. is an abbreviation of post merīdiem, meaning—you guessed it—“after midday.” These two terms help …
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.