English dictionary of medical terms (71)
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- No:1400 - priapism
(L. priapismus; Gr. priapismos) persistent abnormal erection of the
penis, usually without sexual desire, and accompanied by pain and
tenderness. It is seen in diseases and injuries of the spinal
cord, and may be caused by vesical calculus and certain injuries to
- No:1401 - primary
(L. primarius) principal; primus first) first in order or in time
of development; principal.
- No:1402 - primary vaccination
first or principal vaccination ( = introduction of a vaccine into
the body for the purpose of inducing immunity).
- No:1403 - procedure
(L. procedere, from pro forward + cedere move) a series of steps by
which a desired result is accomplished.
- No:1404 - procreation
(L. procreatio) the entire process of bringing a new individual
into the world.
- No:1405 - proctitis
(proct- + -itis) inflammation of the rectum.
- No:1406 - production
the act or process of producing, bringing forth, or making.
- No:1407 - productive
producing or forming; said especially of an inflammation that
produces new tissue or of a cough that brings forth sputum or
- No:1408 - progestogen
a term applied to any substance possessing progestational activity.
- No:1409 - prognosis
(Gr. prognosis foreknowledge) a forecast as to the probable outcome
of an attack of disease; the prospect as to recovery from a disease
as indicated by the nature and symptoms of the case.
- No:1410 - progressive
advancing; going forward; going from bad to worse; increasing in
scope or severity.
- No:1411 - prolapse
(L. prolapsus; pro before + labi to fall) 1. the falling down, or
sinking, of a part or viscus; procidentia. 2. to undergo such
- No:1412 - proliferation
(L. proles offspring + ferre to bear) the reproduction or
multiplication of similar forms, especially of cells and morbid
- No:1413 - prophylaxis
(Gr. prophylassein to keep guard before) the prevention of disease;
- No:1414 - proportional
being in proportion : corresponding in size, degree, or intensity,
having the same or a constant ratio; of, relating to, or used in
- No:1415 - proptosis
forward projection or displacement especially of the eyeball :
- No:1416 - propulsive
tending or having power to propel; driving onward or forward;
impelling to action or motion.
- No:1417 - prostaglandin
(prostate gland + -in because they were originally discovered in
semen) any of a group of components derived from unsaturated 20-carbon fatty acids, primarily arachidonic acid, via the
cyclooxygenase pathway that are extremely potent mediators of a
diverse group of physiologic processes. The abbreviation for
prostaglandin is PG; specific compounds are designated by adding
one of the letters A through I to indicate the type of substituents
found on the hydrocarbon skeleton and a subscript (1, 2 or 3) to
indicate the number of double bonds in the hydrocarbon skeleton
e.g., PGE2. The predominant naturally occurring prostaglandins all
have two double bonds and are synthesized from arachidonic acid
(5,8,11,14-eicosatetraenoic acid) by the pathway shown in the
illustration. The 1 series and 3 series are produced by the same
pathway with fatty acids having one fewer double bond (8,11,14-eicosatrienoic acid or one
more double bond (5,8,11,14,17-eicosapentaenoic acid) than arachidonic acid. The subscript a
ß indicates the configuration at C-9 (a denotes a substituent below
the plane of the ring, ß, above the plane). The naturally
occurring PGF's have the a configuration, e.g., PGF2a. All of the
prostaglandins act by binding to specific cell-surface receptors
causing an increase in the level of the intracellular second
messenger cyclic AMP (and in some cases cyclic GMP also). The
effect produced by the cyclic AMP increase depends on the specific
cell type. In some cases there is also a positive feedback effect.
Increased cyclic AMP increases prostaglandin synthesis leading to
further increases in cyclic AMP.
- No:1418 - prostatism
a symptom complex resulting from compression or obstruction of the
urethra, due most commonly to hyperplasia of the prostate; symptoms
include diminution in the calibre and force of the urinary stream,
hesitancy in initiating voiding, inability to terminate micturition
abruptly (with postvoiding dribbling), a sensation of incomplete
bladder emptying, and, occasionally, urinary retention.
- No:1419 - prostatitis
inflammation of the prostate.
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