Main Entry: em·bry·ol·o·gy Pronunciation: -jE Function: noun Inflected Form: plural-gies 1: abranch of biology dealing with embryos and their development 2: the features and phenomena exhibited in the formation and development of an embryo —em·bry·o·log·i·cal/-brE-&-'läj-i-k&l/alsoem·bry·o·log·ic/-'läj-ik/adjective —em·bry·o·log·i·cal·ly/-i-k(&-)lE/adverb