单词 | donor |
释义 | donor n.   1. a person who gives or donates something (e.g. to a charity).   2. one who provides blood for a transfusion, semen for insemination, or an organ or tissue for transplantation.   3. Chem. an atom or molecule that provides a pair of electrons in forming a coordinate bond.   4. Physics an impurity atom in a semiconductor which contributes a conducting electron to the material. Phrases and idioms donor card an official card authorizing use of organs for transplant, carried by the donor. Etymology: ME f. AF donour, OF doneur f. L donator -oris f. donare give |
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