1. An individual from whom blood, tissue, or an organ is taken for transplantation. 2. A compound that will transfer an atom or a radical to an acceptor; e.g., methionine is a methyl d.; glutathione is a glutamyl d.. 3. An atom that readily yields electrons to an acceptor; e.g., nitrogen, which will donate both electrons to a shared pool in forming a coordinate bond. [L. dono, pp. donatus, to donate, to give]
- hydrogen d. a metabolite from which hydrogen is removed (by a dehydrogenase system) and transferred by a hydrogen carrier to another metabolite, which is thus reduced.
- universal d. in blood group ing, a person belonging to group O; i.e., one whose erythrocytes do not contain either agglutinogen A or B and are, therefore, not agglutinated by plasma containing either of the ordinary isoagglutinins.

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do·nor 'dō-nər, -.nȯ(ə)r n
1) one used as a source of biological material (as blood or an organ)
2) a compound capable of giving up a part (as an atom, chemical group, or elementary particle) for combination with an acceptor

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a person who makes his own tissues or organs available for use by someone else. For example, a donor may provide blood for transfusion (see blood donor), a kidney for transplantation, or sex cells for artificial insemination or oocyte donation.

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do·nor (doґnər) 1. an individual organism that supplies living tissue to be used in another body, as a person who furnishes blood for transfusion, or an organ for transplantation in a histocompatible recipient. Organs for donation usually come from cadavers (see cadaveric donor transplantation), although kidneys and certain other organs may be from living donors (see living related donor transplantation and living unrelated donor transplantation). 2. in chemistry, a substance or compound which contributes part of itself, as an atom or radical, to another substance (acceptor).

Medical dictionary. 2011.

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Look at other dictionaries:

  • donor — do·nor / dō nər, ˌnȯr/ n: one that gives, donates, grants, or confers something; specif: settlor Merriam Webster’s Dictionary of Law. Merriam Webster. 1996. d …   Law dictionary

  • donor — DONÓR, donori, s.m. 1. (fiz.) Atom pentavalent care, introdus într un semiconductor, cedează electroni acceptorului. 2. (biol.) Individ care cedează celule, cromozomi etc. – Din fr. donneur, engl. donor. Trimis de LauraGellner, 19.06.2004. Sursa …   Dicționar Român

  • donor — mid 15c., from Anglo Fr. donour, O.Fr. doneur (Mod.Fr. donneur), from L. donatorem (nom. donator) giver, donor, agent noun from pp. stem of donare give as a gift (see DONATION (Cf. donation)). Of blood, from 1910; of organs or tissues, from 1918 …   Etymology dictionary

  • Donor — Do nor, n. [F. donneur, OF. daneor, fr. donner. See {Donee}, and cf. {Donator}.] 1. One who gives or bestows; one who confers anything gratuitously; a benefactor. Inverse of recipient. [1913 Webster] 2. (Law) One who grants an estate; in later… …   The Collaborative International Dictionary of English

  • donor — donor. См. донор. (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.

  • dônor — m med. onaj koji daruje organ; darivatelj organa …   Veliki rječnik hrvatskoga jezika

  • donor — [n] giver of gift almsgiver, altruist, angel*, backer, benefactor, benefactress, bestower, conferrer, contributor, donator, grantor, heavy hitter*, patron, philanthropist, presenter, Santa Claus*, savior, subscriber; concept 359 …   New thesaurus

  • donor — ► NOUN 1) a person who donates. 2) a substance, molecule, etc. which provides electrons for a physical or chemical process. ORIGIN Old French doneur, from Latin donare give …   English terms dictionary

  • donor — [dō′nər, dō′nôr΄] n. [ME & Anglo Fr donour < L donator] 1. a person who donates; giver 2. one from whom blood for transfusion, tissue for grafting, etc. is taken 3. an atom that contributes a pair of electrons to another atom to form a… …   English World dictionary

  • Donor — A donor in general is a person who donates something voluntarily. Usually used to represent a form of pure altruism but sometimes used when the payment for a service is recognised by all parties as representing less than the value of the donation …   Wikipedia

  • donor — noun 1 gives a part of their body ADJECTIVE ▪ blood, bone marrow, egg, kidney, organ, sperm, etc. ▪ potential, prospective …   Collocations dictionary

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