- sexually transmitted disease) will compromise the ability to conceive and bear a child. To conceive a child, a woman must ovulate — she must release a mature egg from one of her ovaries —and her male partner must ejaculate tens of millions of mature, motile sperm. While sperm form throughout a man's reproductive life, a woman is born with all the eggs she will ever have. Over the years, her supply is depleted (of about 7 million eggs present at birth, only 400 make it to ovulation) and the remaining eggs age, diminishing their reproductive capacity. A sperm must be reach and penetrate the egg as it travels from the ovary to the uterus. The fertilized egg must then be able to divide many times, implant in the uterus, and form the placenta that is its lifeline until birth.
If the fallopian tubes have been damaged by pelvic infection, or there is endometriosis (misplaced growth of the uterine lining), fertilization or implantation may not be possible. A normal menstrual cycle involves the release of an egg once a month. That egg can survive up to 24 hours. The easiest way to know the fertile time is to chart the menstrual cycle on a calendar. A woman is most likely to be fertile 10 to 14 days after the start of menstruation.
* * *Diminished or absent ability to produce offspring; in either the male or the female, not as irreversible as sterility. [L. in- neg. + fertilis, fruitful]
* * *n.inability in a woman to conceive or in a man to induce conception. Female infertility may be due to failure to ovulate, to obstruction of the Fallopian tube, or to disease of the lining of the uterus (endometrium). Possible treatments (depending on the cause) include administration of drugs (such as clomifene or LHRH analogue), surgery (see salpingography, salpingostomy, salpingolysis) to restore patency of the Fallopian tubes, gamete intrafallopian transfer (GIFT), and in vitro fertilization. Causes of male infertility include decreased numbers or motility of spermatozoa (see oligospermia) and total absence of sperm (see azoospermia). See also andrology, sterility.
* * *in·fer·til·i·ty (in″fər-tilґĭ-te) [in-2 + fertility] diminished or absent capacity to produce offspring; the term does not denote complete inability to produce offspring as does sterility. Called also relative sterility.
Medical dictionary. 2011.
Look at other dictionaries:
Infertility — In fer*til i*ty, n. [L. infertilitas: cf. F. infertilit[ e].] The state or quality of being infertile; unproductiveness; barrenness. [1913 Webster] The infertility or noxiousness of the soil. Sir M. Hale. [1913 Webster] … The Collaborative International Dictionary of English
infertility — infertility. = sterility (см.). (Источник: «Англо русский толковый словарь генетических терминов». Арефьев В.А., Лисовенко Л.А., Москва: Изд во ВНИРО, 1995 г.) … Молекулярная биология и генетика. Толковый словарь.
infertility — c.1600, from L.L. infertilitatem (nom. infertilitas), from infertilis (see INFERTILE (Cf. infertile)) … Etymology dictionary
Infertility — See also: Female infertility, Male infertility, and Sterility (physiology) Infertility Classification and external resources ICD 10 N46, N97.0 … Wikipedia
infertility — in·fer·til·i·ty (ĭn fər tĭlʹĭ tē) n. 1. Absent or diminished fertility. 2. The persistent inability to conceive a child. * * * Inability of a couple to conceive and reproduce. It is defined as failure to conceive after one year of regular… … Universalium
infertility — noun ADJECTIVE ▪ female, male VERB + INFERTILITY ▪ cause, lead to ▪ treat INFERTILITY + NOUN … Collocations dictionary
infertility — in|fer|til|i|ty [ˌınfəˈtılıti US fər ] n [U] when someone is unable to have a baby ▪ There are many possible causes of infertility in women. ▪ infertility treatments … Dictionary of contemporary English
infertility — n. inability in a woman to conceive or in a man to induce conception after regular unprotected sexual intercourse for two years. Female infertility may be due to failure to ovulate, to obstruction of the Fallopian tubes, or to disease of the… … The new mediacal dictionary
infertility — in|fer|til|i|ty [ ,ınfər tıləti ] noun uncount 1. ) someone s lack of the physical ability to have children: infertility treatments 2. ) the fact that land is infertile 3. ) the failure to produce something good or useful … Usage of the words and phrases in modern English
infertility — UK [ˌɪnfə(r)ˈtɪlətɪ] / US [ˌɪnfərˈtɪlətɪ] noun [uncountable] 1) someone s lack of the physical ability to have children infertility treatments 2) the fact that land is infertile 3) the failure to produce something good or useful … English dictionary