Definition of embryo - NCI Dictionary of Cancer Terms

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embryo

Early stage in the development of a plant or an animal. In vertebrate animals (have a backbone or spinal column), this stage lasts from shortly after fertilization until all major body parts appear. In particular, in humans, this stage lasts from about 2 weeks after fertilization until the end of the seventh or eighth week of pregnancy.

Previous Definitions:	Eloxatin, Elspar, EM-1421, embolism, embolization
Next Definitions:	embryoma, embryonal rhabdomyosarcoma, embryonal tumor, embryonic, EMD 121974