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The act or process of acidifying, or changing into an acid.

To make sour or acid in a moderate degree; to sour somewhat. Arbuthnot.

Communicated orally; oral; -- applied to the esoteric teachings of Aristotle, those intended for his genuine disciples, in distinction from his exoteric doctrines, which were adapted to outsiders or the public generally. Hence: Abstruse; profound.

Same as Acroamatic.

One who practices rope dancing, high vaulting, or other daring gymnastic feats.

Pertaining to an acrobat. -- Ac`ro*bat"ic*al*ly, adv.

Feats of the acrobat; daring gymnastic feats; high vaulting.

Having each verse begin with the same letter as that with which the preceding verse ends.

To make active. [Obs.]

A making actual or really existent. [R.] Emerson.

motives do; -- more commonly used of persons. Wings, which others were contriving to actuate by the perpetual motion. Johnson. Men of the greatest abilities are most fired with ambition; and, on the contrary, mean and narrow minds are the least actuated by it. Addison.

A bringing into action; movement. Bp. Pearson.

One who actuates, or puts into action. [R.] Melville.

To sharpen; to make pungent; to quicken. [Obs.] "[To] acuate the blood." Harvey.

Act of sharpening. [R.]

Having a sting; covered with prickles; sharp like a prickle.

Having a sharp point; armed with prickles; prickly; aculeate.

Having small prickles or sharp points. Gray.

Tapering to a point; pointed; as, acuminate leaves, teeth, etc.

A sharpening; termination in a sharp point; a tapering point. Bp. Pearson.