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A balloon.

Of or pertaining to aërostatics; pneumatic.

The science that treats of the equilibrium of elastic fluids, or that of bodies sustained in them. Hence it includes aëronautics.

The science of weighing air; aërostatics. [Obs.]

itive or negative stimulus exerted by oxygen on aërobic and anaërobic bacteria. -- A`ër*o*tac"tic (#), a.

o assume or exhibit what is not natural or real; false display; artificial show. "An affectation of contempt." Macaulay. Affectation is an awkward and forced imitation of what should be genuine and easy, wanting the beauty that accompanies what is natural what is natural. Locke.

One who exhibits affectation. [R.] Fitzed. Hall.

Of the nature of affinity. -- Af*fin"i*ta*tive*ly, adv.

The act of converting into forest or woodland. Blackstone.

Aftergrass.

A taste which remains in the mouth after eating or drinking.

To withstand. [Obs.]

vers of speculators to raise or lower the price of stocks or public funds. Vanity and agiotage are to a Parisian the oxygen and hydrogen of life. Landor.

See Agister.

Capable of being agitated, or easily moved. [R.]

To move with a violent, irregular action; as, the wind agitates the sea; to agitate water in a vessel. "Winds . . . agitate the air." Cowper.

In an agitated manner.

The act of agitating, or the state of being agitated; the state of being moved with violence, or with irregular action; commotion; as, the sea after a storm is in agitation.

Tending to agitate.

Sung or played in a restless, hurried, and spasmodic manner.