Definition of blue-green alga
blue´-green al´ga
1.
any
of
a
group
of
photosynthetic
microorganisms
possessing
characteristics
of
both
bacteria
and
plants
.
When
classed
as
bacteria
,
they
are
assigned
to
the
Cyanobacteria
;
when
classed
as
plants
,
they
are
assigned
to
the
Cyanophyta
.
They
are
now
known
to
be
prokaryotic
,
and
are
usually
called
cyanobacteria
in
technical
contexts
.
See
cyanobacterium
.
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Blue ribbon
Blue ruin
Blue spar
Blue stocking
Blue tangle
Blue thrush
Blue verdigris
Blue verditer
Blue vitriol
Blue water
blue weed
Blue wren
blue-blind
blue-blindness
blue-blooded
blue-collar
Blue-eye
Blue-eyed
Blue-eyed grass
Blue-grass State
Blue-john
blue-pencil
blue-ribbon
Blue-skylaw
Blue-throated robin
Blue-veined
Blueback
Bluebeard
Bluebell
Blueberry
Bluebill
Bluebird
Bluebottle
Bluebreast
Bluecap
Bluecoat
Bluefin
Bluefish
Bluegown
blueing
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