(countable, uncountable) A state of floating, or being afloat.
(countable, uncountable) The ability (as of a tire or snowshoes) to stay on the surface of soft ground or snow.
(countable, uncountable) A process of separating minerals by agitating a mixture with water and detergents etc; selected substances being carried to the surface in air bubbles.
(British, countable, uncountable) The launching onto the market of a tranche of stocks or shares, usually a new issue.