c. 1600, from French fluidité, from fluide (see fluid (adj.)), or else formed in English from fluid.
adding lead makes the alloy easier to cast because the melting point is reduced and the fluidity is increased
they believe that fluidity increases as the water gets warmer
demographers try to predict social fluidity
a charming Oriental fluidity of manner
fluent
fluff
fluffy
flugelhorn
fluid
fluidity
fluke
fluky
flume
flummery
flummox
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