Medical Dictionary Definitions A-Z List
Medical Dictionary Definitions A - Z - «E»:
Ecogenetics: The interaction of genetics with the
environment. The genetic disease PKU (phenylketonuria) provides an illustration of
ecogenetics. Persons with PKU lack an enzyme to process an amino acid (phenylalanine) and
so require a special environment: a diet low in phenylalanine. ...
Economy class syndrome
Economy class syndrome: The formation of blood clots in veins deep within the legs -- deep vein thrombosis -- occurring during (or just after) a long airplane flight, especially in economy class (tourist class) where there is the least space allotted per passenger and ones legs tend especially to be...
ECST: ECST stands for the exercise cardiac stress test, the most widely used cardiac (heart) screening test.
In an ECST the patient exercises on a treadmill according to a standardized protocol, with progressive increases in the speed and elevation of the treadmill (typically changing at three-mi...
Ecstasy: 1. A state of rapture and trancelike elation.
2. A street name for 3-4 methylenedioxymethamphetamine (MDMA), also called "Adam," "ecstasy," or "XTC" on the street, a synthetic, psychoactive (mind-altering) drug with hallucinogenic and amphetamine-like properties. Its chemical structure is s...
Ecstatic: Pertaining to ecstasy, a state of rapture and trancelike elation....
ECT: Electroconvulsive therapy....
Ectoderm: One of the three primary germ cell layers (the other two being the mesoderm and endoderm) that make up the very early embryo. The ectoderm is the outermost of the three layers. It differentiates to give rise to many important tissues and structures including the outer layer of the skin and...
Ectodermal: Pertaining to the ectoderm or to tissues derived from the ectoderm, one of the three primary germ cell layers that make up the very early embryo. The ectoderm is the outermost of the three layers....
Ectodermal dysplasia: A genetic disorder in which there is abnormal development of the skin and associated structures (the hair, nails, teeth, and sweat glands). The most dangerous problem occurs in cases with decreased sweating due to absence of the sweat glands. Affected persons have trouble contr...
Ectodermosis erosiva pluriorificialis
Ectodermosis erosiva pluriorificialis: See: Stevens-Johnson syndrome. ...
-ectomy: A surgical suffix referring to the removal of something. For example, a lumpectomy is the surgical excision of a lump which may be benign or not, tonsillectomy is the removal of the tonsils, a partial colectomy is removal of part of the colon, an appendectomy is removal of the appendix, etc...
Ectoparasite: A parasite that lives on or in the skin but not within the body. Fleas and lice are ectoparasites. Infestation with an ectoparasite is called an ectoparasitosis....
Ectoparasitosis: Infestation with an ectoparasite, a parasite that lives on or in the skin. The four major ectoparasitoses are pediculosis, scabies, cutaneous larva migrans and tungiasis (sand-flea disease)....