An embryo (/ ˈɛmbrioʊ / EM-bree-oh) is the initial stage of development for a multicellular organism. In organisms that reproduce sexually, embryonic development is the part of the life cycle that begins …

The meaning of EMBRYO is an animal in the early stages of growth and differentiation that are characterized by cleavage, the laying down of fundamental tissues, and the formation of primitive …

Oct 14, 2025 · Timing is what sets apart an embryo from a fetus. Learn more about the stages of your baby’s development here.

Not only do embryos get bigger during that time, but they also go from being just a simple, single, cell to being the many cells that make up a human. All of a human’s features, organs, and body systems …

Aug 13, 2023 · In Biology, an embryo is designated as the initial phase of development for a multicellular organism arising after the fusion of a sperm cell (male sex gamete) and an egg cell (female sex …

Use the stage number links to images and information about each specific stage of human development over the first 8 weeks. The links below give a broad overview of developmental events during each …

Jul 22, 2025 · Human embryo development begins with fertilization, the union of a sperm and an egg, typically in the fallopian tube. This fusion forms a single-celled zygote, containing a complete set of …

EMBRYO definition: 1. an animal that is developing either in its mother's womb or in an egg, or a plant that is…. Learn more.

Definition of embryo noun in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Embryology is the study of the development of an embryo. The exact time period generally corresponding to the embryonic stage is imprecisely defined.