exosporium
English
Etymology
From
exo-
+
spore
+
-ium
.
Noun
exosporium
(
plural
exosporia
)
(
botany
)
The
outer
layer
of a
pollen
grain
or
spore
; the
exine
.
Synonyms
exine
exospore
Coordinate terms
endosporium
(
intine
)