midvein
English
Etymology
From
mid-
+
vein
.
Noun
midvein
(
plural
midveins
)
(
botany
)
The main
vein
of a
simple leaf
or
leaflet
, running from the
petiole
to its
apex
, and from which the other
veins
usually
spread
.
Synonyms:
midrib
,
middle rib