from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun Implantation and subsequent development of a fertilized ovum outside the uterus, as in a fallopian tube.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun A
pregnancyin which the fertilized ovumis implanted in any tissue other than the uterinewall. Most ectopic pregnancies occur in the Fallopian tube(so-called tubal pregnancies), but implantation can also occur in the cervix, ovaries, and abdomen. An abdominal pregnancy or heterotopic pregnancy is rare, but a few, fabulously rare (about 1:60,000,000) cases are documented as coming to term; in the other instances, the mother dies first; an abdominal pregnancy is the supreme obstetrical emergency. All are treated by surgery where the life of the non-viable fetusis sacrificed for that of the mother.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun pregnancy resulting from gestation elsewhere than in the uterus
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