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Webster 1913 Edition
Proembryo
Pro-em′bry-o
,Noun.
[Pref.
pro-
+ embryo
. ] (Bot.)
(a)
The series of cells formed in the ovule of a flowering plant after fertilization, but before the formation of the embryo.
(b)
The primary growth from the spore in certain cryptogamous plants;
as, the
. proembryo
, or protonema, of mosses