pro- Prefix denoting forward, first, to, towards the front or preceding. It may or may not be a coincidence that hundreds of drug names, especially brand names, have this prefix.

professional review organization (PRO) a program on multiple governmental levels (local, state, and federal) that regulates the quality and cost of federally funded medical care.

de- Prefix meaning away from, cessation, without; sometimes has an intensive force.

tachy- adjectival prefix Swift, rapid. Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

ante- (an'tē), Do not confuse this prefix with anti-. Before, in front of (in time or place or order). See also: pre-, pro- (1).

In biochemistry, a prefix to a group name in an enzyme name or a reaction denoting transfer of that group from one compound to another; for example, transformylase (transfers a formyl …

Prefix denoting above, beyond, over, excessive. Hyper- is one of the most widely-used prefixes in medicine and covers a range of senses all of which imply an excess over the normal.

prophylaxis Medtalk A medical maneuver intended to prevent disease. See Chemoprophylaxis, HIV prophylaxis, Malaria prophylaxis.

pro·drome (prō'drōm), The correct plural of this word is prodromes, not prodromata. An early or premonitory symptom of a disease.

(dis), This Latin prefix denotes separation (disjunction), opposition (discord), or negation (disability). There is currently a tendency to extend its range of meanings to include those of …