Bible Dictionaries
Neocomian

Webster's Dictionary

(1):

(n.) A term applied to the lowest deposits of the Cretaceous or chalk formation of Europe, being the lower greensand.

(2):

(a.) Of or pertaining to the lower greensand.

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