Per meaning in medical terms

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

per-

Do not confuse this prefix with peri- . 1. Through, conveying intensity.
See also: peroxy-.

2. In chemistry, a prefix denoting either 1) more or most, with respect to the amount of a given element (usually oxygen, as in perchloric acid) or radical contained in a compound, or 2) the degree of substitution for hydrogen, as in peroxides, peroxy acids (for example, hydrogen peroxide, peroxyformic acid).
See also: peroxy-.

[L. through, throughout, extremely] Farlex Partner Medical Dictionary © Farlex 2012

per-

1. Prefix meaning through; denoting intensity.

2. chemistry More or most, with respect to the amount of a given element or radical contained in a compound; the degree of substitution for hydrogen, as in peroxides, peroxy acids (e.g., hydrogen peroxide, peroxyformic acid).
See also: peroxy-