:For other meanings see Zygote (disambiguation). A zygote (or zygocyte) (from Greek ζυγωτός zugōtos "joined" or "yoked", from ζυγοῦν zugoun "to join" or "to yoke")'s a term in Developmental biology used to describe the first stage of a new unique organism when it consists of just a single cell. The term's also used more loosely to refer to the group of cells formed by the first few cell divisions, although this's properly ref… (More on Zygote)