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numbered stages of human embryonic development defined by conspicuous anatomic features such as the appearance of limb buds; there are 23 Carnegie stages.
Farlex Partner Medical Dictionary © Farlex 2012
Car·ne·gie stages(kar-nā'gē, kahrnĕ-gē stājĕz)
The 23 developmental stages in human embryos, starting at fertilization and ending 56 days later by which time the embryo has uniquely human features; the stages are based on carefully defined morphologic criteria.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012