" embryonic "

[Adjective]  | "em*bry*on*ic" | \ ˌem-brē-ˈä-nik \

1: of or relating to an embryo

2: being in an early stage of development : incipient, rudimentary

Origin: 1740 ;

 Borrowed from New Latin embryonicus, from embryon-, embryo {see: |embryo|embryo} + Latin -icus {see: |-ic:1|-ic:1};

[Noun]  | "embryonic disc" 

1: blastodisc

2: blastoderm

3: the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops —called also embryonic shield

Origin: 1871 ;

[Noun]  | "embryonic membrane" 

1: a structure (such as the amnion) that derives from the fertilized ovum but does not form a part of the embryo

Origin: 1947 ;

[Adjective]  | "embryonic"