Bible Dictionaries
Astrodisc

Webster's Dictionary

(n.) That part of blastoderm where the hypoblast appears like a small disk on the inner face of the epibladst.

Bibliography Information
Webster, Noah. Entry for 'Astrodisc'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​a/astrodisc.html. 1828.