Bible Dictionaries
Proembryo

Webster's Dictionary

(1):

(n.) The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo.

(2):

(n.) The primary growth from the spore in certain cryptogamous plants; as, the proembryo, or protonema, of mosses.

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