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bacteria
noun
-
bacterium
,
bacteria
the
plural
form
of
bacterium
:
tiny
single-celled
living
things
that
exist
almost
everywhere
,
some
helpful
and
some
harmful
•
Doctors
can
see
harmful
bacteria
under
a
microscope
.
Doctors
can
see
harmful
bacteria
under
a
microscope
.
•
Yogurt
contains
live
bacteria
that
are
good
for
digestion
.
Yogurt
contains
live
bacteria
that
are
good
for
digestion
.
Borrowed
from
Latin
‘
bacterium
’ (
plural
‘
bacteria
’),
originally
from
Greek
‘
bakterion
’
meaning
‘
small
staff
’
because
of
the
rod
shape
of
many
species
.
noun
-
bacteria
(
informal
)
a
single
microorganism
of
this
kind
,
treated
as
one
unit
•
This
bacteria
is
responsible
for
food
poisoning
.
This
bacteria
is
responsible
for
food
poisoning
.
•
Scientists
are
studying
how
the
bacteria
adapts
to
antibiotics
.
Scientists
are
studying
how
the
bacteria
adapts
to
antibiotics
.
