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blastodiskenUK
blas·to·disk or blas·to·disc B0315500 (blăs′tə-dĭsk′)n. See germinal disk.blas•to•disk or blas•to•disc (ˈblæs təˌdɪsk)
n. the blastula forming as a flattened sphere on top of the yolk in the eggs of birds and reptiles. [1885–90] blastodiskenUK
blastodisk[′blas·tə‚disk] (embryology) The embryo-forming, protoplasmic disk on the surface of a yolk-filled egg, such as in reptiles, birds, and some fish. blastodiskenUK
blastodisk or blastodisc (blăs′tə-dĭsk′)n. See germinal disk.blastodisk (blăs′tō-dĭsk) [″ + diskos, disk] A flat disk of embryonic cells on the surface of the yolk of the ovum. It forms from the blastomeres. ThesaurusSeeblastodisc |