English dictionary of medical terms (29)
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- No:560 - electrocardiography
the making of graphic records of the variations in electrical
potential caused by electrical activity of the heart muscle and
detected at the body surface, as a method for studying the action
of the heart muscle.
- No:561 - electroencephalography
the recording of the electric currents developed in the brain, by
means of electrodes applied to the scalp, to the surface of the
brain (intracranial e.) or placed within the substance of the brain
- No:562 - electrolyte
(electro- + Gr. lytos that may be dissolved) a substance that
dissociates into ions when fused or in solution, and thus becomes
capable of conducting electricity; an ionic solute.
- No:563 - electrophysiological
pertaining to electrophysiology, that is a branch of physiology
that is concerned with the electric phenomena associated with
living bodies and involved in their functional activity.
- No:564 - elimination
(L. eliminatio, from e out + limen threshold) the act of expulsion
or of extrusion, especially of expulsion from the body.
- No:565 - embolism
(L. embolismus, from Gr. en in + ballein to throw) the sudden
blocking of an artery by a clot or foreign material which has been
brought to its site of lodgment by the blood current.
- No:566 - embryo
(Gr. embryon) in animals, those derivatives of the fertilized ovum
that eventually become the offspring, during their period of most
rapid development, i.e., after the long axis appears until all
major structures are represented. In man, the developing organism
is an embryo from about two weeks after fertilization to the end of
seventh or eighth week.
- No:567 - emesis
(Gr. emein to vomit) vomiting; an act of vomiting. Also used as a
word termination, as in haematemesis.
- No:568 - emetic
(Gr. emetikos; L. emeticus) an agent that causes vomiting.
- No:569 - emollient
(L. emolliens softening, from e out + mollis soft) softening or
soothing; called also malactic.
- No:570 - emotional
pertaining to the emotions.
- No:571 - emphysema
(Gr. 'an inflation') a pathological accumulation of air in tissues
or organs; applied especially to such a condition of the lungs.
- No:572 - empiric
empirical; depending upon experience or observation alone, without
using scientific method or theory.
- No:573 - empyema
(Gr. empyema) accumulation of pus in a cavity of the body; when
used without a descriptive qualifier, it refers to thoracic empyema
- No:574 - emulsify
to convert or to be converted into an emulsion.
- No:575 - emulsion
- (L. emulsio, emulsum) a preparation of one liquid distributed in
small globules throughout the body of a second liquid. The
dispersed liquid is the discontinuous phase, and the dispersion
medium is the continuous phase. When oil is the dispersed liquid
and an aqueous solution is the continuous phase, it is known as an
oil-in-water emulsion, whereas when water or aqueous solution is
the dispersed phase and oil or oleaginous substance is the
continuous phase, it is known as a water-in-oil emulsion.
Pharmaceutical emulsions for which official standards have been
promulgated include cod liver oil emulsion, cod liver oil emulsion
with malt, liquid petrolatum emulsion, and phenolphthalein in
liquid petrolatum emulsion.
- No:576 - enanthema
(Gr. en in + anthema a blossoming) an eruption upon a mucous
- No:577 - encephalitis
inflammation of the brain.
- No:578 - encephalopathy
(encephalo- + Gr. pathos illness) any degenerative disease of the
- No:579 - endemic
(Gr. endmos dwelling in a place) present or usually prevalent in
a population or geographical area at all times; said of a disease
or agent. Called also endemial. Cf. epidemic.
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