Embryo

Early stage of development in multicellular organisms.

fetal stage

An embryo is an early stage of development in multicellular organisms, typically after fertilization and before birth or hatching. It undergoes significant changes as it develops into a fetus.

/ˈembri.əʊ/

The word 'embryo' comes from the Greek word 'embryon', meaning 'something newly formed'.

An embryo is like a tiny seed that grows into a plant, but instead of a plant, it's growing into an animal or human.

What is an embryo? It's the early stage of development after fertilization
How long does it last? In humans, the embryonic period typically lasts until about eight weeks
What happens during this stage? Major organs and body systems begin to form

foetus

development organism

blastula gastrula

cells tissues organs

organism animal

biological process developmental