Definition of Umbo
Um´bo
n.
1.
The
boss
of
a
shield
,
at
or
near
the
middle
,
and
usually
projecting
,
sometimes
in
a
sharp
spike
.
2.
A
boss
,
or
rounded
elevation
,
or
a
corresponding
depression
,
in
a
palate
,
disk
,
or
membrane
;
as
,
the
umbo
in
the
integument
of
the
larvæ
of
echinoderms
or
in
the
tympanic
membrane
of
the
ear
.
3.
(Zool.)
One
of
the
lateral
prominences
just
above
the
hinge
of
a
bivalve
shell
.
Related Words
convex
shape
,
convexity
,
eardrum
,
myringa
,
tympanic
membrane
,
tympanum
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Umbellic acid
Umbellifer
Umbelliferone
Umbelliferous
Umbellularia
Umbellule
Umber
Umbery
Umbilic
Umbilical
Umbilical cord
Umbilical hernia
Umbilical point
Umbilical region
Umbilical vesicle
Umbilicate
Umbilication
Umbilicus
Umble pie
Umbles
Umbonate
Umbra
Umbra tree
Umbraculiferous
Umbraculiform
Umbrage
umbrageous
Umbrate
Umbratic
Umbratile
Umbratious
Umbre
Umbrel
Umbrella
Umbrella ant
Umbrella bird
Umbrella leaf
Umbrella shell
Umbrella tree
Umbrere
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