ˈflu:ɪd n. & adj. --n. 1 a
substance,
esp. a
gas or
liquid,
lacking definite shape and capable of
flowing and
yielding to
the slightest
pressure. 2 a fluid
part or
secretion. --adj. 1
able to
flow and
alter shape freely. 2 constantly changing or fluctuating (the
situation is fluid). 3 (of a clutch,
coupling, etc.) in
which liquid is used to
transmit power. øfluid
drachm see DRACHM. fluid ounce see
OUNCE(1). øøfluidify v.tr. (-ies, -ied). fluidity n. fluidly adv. fluidness n. [F fluide or L fluidus f. fluere flow]