the time required for something to fall to half its initial value (in particular, the time for half the atoms in a radioactive substance to disintegrate)
a distinctive but intangible quality surrounding a person or thing; "an air of mystery"; "the house had a neglected air"; "an atmosphere of defeat pervaded the candidate's headquarters"; "the place had an aura of romance"
medium for radio and television broadcasting; "the program was on the air from 9 til midnight"; "the president used the airwaves to take his message to the people"
the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"
a mixture of gases (especially oxygen) required for breathing; the stuff that the wind consists of; "air pollution"; "a smell of chemicals in the air"; "open a window and let in some air"; "I need some fresh air"
once thought to be one of four elements composing the universe (Empedocles)
expose to warm or heated air, so as to dry; "Air linen"
broadcast over the airwaves, as in radio or television; "We cannot air this X-rated song"
be broadcast; "This show will air Saturdays at 2 P.M."
appealing to or using the intellect; "satire is an intellectual weapon"; "intellectual workers engaged in creative literary or artistic or scientific labor"; "has tremendous intellectual sympathy for oppressed people"; "coldly intellectual"; "sort of the intellectual type"; "intellectual literature"
of or associated with or requiring the use of the mind; "intellectual problems"; "the triumph of the rational over the animal side of man"
of or relating to the intellect; "his intellectual career"
appearing dead; not breathing or having no perceptible pulse; "an inanimate body"; "pulseless and dead"
not breathing or able to breathe except with difficulty; "breathless at thought of what I had done"; "breathless from running"; "followed the match with breathless interest"
tending to cause suspension of regular breathing; "a breathless flight"; "breathtaking adventure"
a hand tool with a flat face used for smoothing and finishing the surface of plaster or cement or stucco
an elaborate display mounted on a platform carried by a truck (or pulled by a truck) in a procession or parade
the number of shares outstanding and available for trading by the public
the time interval between the deposit of a check in a bank and its payment
convert from a fixed point notation to a floating point notation; "float data"
allow (currencies) to fluctuate; "The government floated the ruble for a few months"
make the surface of level or smooth; "float the plaster"
put into the water; "float a ship"
move lightly, as if suspended; "The dancer floated across the stage"
set afloat; "He floated the logs down the river"; "The boy floated his toy boat on the pond"
be in motion due to some air or water current; "The leaves were blowing in the wind"; "the boat drifted on the lake"; "The sailboat was adrift on the open sea"; "the shipwrecked boat drifted away from the shore"
be afloat; stay on a liquid surface; not sink
circulate or discuss tentatively; test the waters with; "The Republicans are floating the idea of a tax reform"