Definitions of conceptus

n an animal organism in the early stages of growth and differentiation that in higher forms merge into fetal stages but in lower forms terminate in commencement of larval life

embryo, fertilized egg
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blastosphere, blastula
early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs
double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm
a solid mass of blastomeres that forms when the zygote splits; develops into the blastula
blastocyst, blastodermic vessicle
the blastula of a placental mammal in which some differentiation of cells has occurred
Type of:
animal, animate being, beast, brute, creature, fauna
a living organism characterized by voluntary movement

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