Definition of Pinna
Pin´na
n.
1.
(Bot.)
A
leaflet
of
a
pinnate
leaf
.
See
Illust.
of
Bipinnate
leaf
,
under
Bipinnate
.
2.
(Zool.)
One
of
the
divisions
of
a
pinnate
part
or
organ
.
3.
(Zool.)
Any
species
of
Pinna
,
a
genus
of
large
bivalve
mollusks
found
in
all
warm
seas
.
The
byssus
consists
of
a
large
number
of
long
,
silky
fibers
,
which
have
been
used
in
manufacturing
woven
fabrics
,
as
a
curiosity
.
4.
(Anat.)
The
auricle
of
the
ear
.
See
Ear
.
Related Words
leaflet
,
pinnule
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Pinioned
Pinionist
Pinite
Pink
Pink eye
Pink needle
Pink salt
Pink saucer
Pink stern
Pink-eyed
Pink-sterned
Pinked
Pinking
Pinking iron
Pinkish
Pinkness
Pinkroot
Pinkster
Pinkster flower
Pinky
Pinnace
Pinnacle
Pinnage
Pinnate
Pinnated grouse
Pinnately
Pinnatifid
Pinnatilobate
Pinnatiped
Pinner
Pinnet
Pinniform
Pinnigrada
Pinnigrade
Pinniped
Pinnipedes
Pinnipedia
Pinnock
Pinnothere
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