blastoderm

As nouns the difference between blastoderm and blastodisk

is that blastoderm is (embryology) the germination point in an ovum from whence the embryo develops while blastodisk is (biology) a round, flattened region of cells from which the embryo of many vertebrates begins to develop in the fertilized ovum; a germinal disk.

As nouns the difference between blastoderm and blastodisc

is that blastoderm is the germination point in an ovum from whence the embryo develops while blastodisc is alternative form of lang=en.

As a noun blastoderm

is the germination point in an ovum from whence the embryo develops.

As an initialism HTTP is

hypertext Transfer Protocol, the protocol used most commonly to transfer web pages and accompanying data over the Internet.