blastospheric vs blastosphere

blastospheric is not a noun while blastosphere is a noun.

Word	Noun	Adjective	Verb	Adverb
blastospheric	No	Yes	No	No
blastosphere	Yes	No	No	No

blastospheric (noun)	blastosphere (noun)
	early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs

blastospheric (adjective)	blastosphere (adjective)
of or relating to a blastula