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Air bladder
Meaning
Noun
●
An
internal organ
that
fish
use to
control their
buoyancy
,
allowing
them to
maintain
or change
depth
by
changing
their density.
●
A type of
packing
material
that
consists of
an
airtight
bag
full
of
air
, used to
cushion
fragile
items.
Sourced from
Wiktionary
Synonyms
Gas Bladder
Swim Bladder
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