Definition of Yam
Pronunciation:
yăm
n.
1.
(Bot.)
A
large
,
esculent
,
farinaceous
tuber
of
various
climbing
plants
of
the
genus
Dioscorea
;
also
,
the
plants
themselves
.
Mostly
natives
of
warm
climates
.
The
plants
have
netted-veined
,
petioled
leaves
,
and
pods
with
three
broad
wings
.
The
commonest
species
is
Dioscorea
sativa
,
but
several
others
are
cultivated
.
2.
(Bot.)
Any
one
of
several
cultural
varieties
of
the
sweet
potato
.
Chinese yam
a
plant
(
Dioscorea
Batatas
)
with
a
long
and
slender
tuber
,
hardier
than
most
of
the
other
species
.
Wild yam
a
-
A
common
plant
(
Dioscorea
villosa
)
of
the
Eastern
United
States
,
having
a
hard
and
knotty
rootstock
.
b
-
An
orchidaceous
plant
(
Gastrodia
sesamoides
)
of
Australia
and
Tasmania
.
Related Words
tuber
,
yam
plant
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