What is "embryotroph"

Embryotroph \Em"bry*o*troph`\, n. [Gr. 'e`mbryon an embryo + trofh` nourishment.] (Biol.) The material from which an embryo is formed and nourished.

n. (context biology English) The material from which an embryo is formed and nourished.

Embryotroph is the embryonic nourishment in placental mammals. In order to explain in more depth what an embryotroph actually is, other words such as syncytiotrophoblast and uterine milk must be mentioned in that same context.