embryo
English Thesaurus
1. 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 (noun.animal)
| hyponym | : | blastosphere, blastula, |
| definition | : | 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 (noun.animal) |
| hyponym | : | gastrula, |
| definition | : | 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 (noun.animal) |
| hyponym | : | morula, |
| definition | : | a solid mass of blastomeres that forms when the zygote splits; develops into the blastula (noun.animal) |
| part holonym | : | umbilical, umbilical cord, |
| definition | : | membranous duct connecting the fetus with the placenta (noun.body) |
2. (botany) a minute rudimentary plant contained within a seed or an archegonium (noun.plant)
| hypernym | : | flora, plant, plant life, |
| definition | : | (botany) a living organism lacking the power of locomotion (noun.tops) |
| domain category | : | botany, phytology, |
| definition | : | the branch of biology that studies plants (noun.cognition) |
3. 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 (noun.animal)
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