Geology. (of a constituent of a rock) formed elsewhere than in the rock where it is found.
1888, from Greek allogenes “of another race, stranger,” from allos “other, different” (see allo-) + -genes “born” (see -gen) + -ic.
allogeneic (āl’ə-jə-nē’ĭk) also allogenic
Being genetically different although belonging to or obtained from the same species, as in tissue grafts.
a tissue or organ obtained from one member of a species and to a genetically dissimilar member of the same species. noun a tissue graft from a donor genetically unrelated to the recipient allograft al·lo·graft (āl’ə-grāft’) n. A graft of tissue obtained from a donor genetically different from, though of the same species as the […]
Linguistics. a variant form of a grapheme that is in complementary distribution or free variation with another form of the same grapheme, as t and T or n in run and nn in runner; an orthographic contextual variant. Compare . writing or a signature inscribed by one person for another, as distinguished from autograph. a […]
growth of a part of an organism in relation to the growth of the whole organism or some part of it. the measurement or study of this growth. noun the study of the growth of part of an organism in relation to the growth of the entire organism a change in proportion of any of […]
allokeratoplasty allokeratoplasty al·lo·ker·a·to·plas·ty (āl’ō-kěr’ə-tō-plās’tē) n. The replacement of opaque corneal tissue with a transparent prosthesis usually made of acrylic.