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The top or highest point; the culmination. The very acme and pitch of life for epic poetry. Pope. The moment when a certain power reaches the acme of its supremacy. I. Taylor.

An organic base, in the form of a white powder, obtained from Aconitum lycoctonum. Eng. Cyc.

An instrument for measuring the acuteness of the sense of hearing. Itard.

xperimental knowledge of; to make (one) to know; to make familiar; -- followed by with. Before a man can speak on any subject, it is necessary to be acquainted with it. Locke. A man of sorrows and acquainted with grief. Isa. liii. 3.

discontent); to accept or consent by silence or by omitting to object; -- followed by in, formerly also by with and to. They were compelled to acquiesce in a government which they did not regard as just. De Quincey.

The act of acquiring, or that which is acquired; attainment. "Rules for the acquirement of a taste." Addison. His acquirements by industry were . . . enriched and enlarged by many excellent endowments of nature. Hayward.

To pay for; to atone for. [Obs.] Shak.

a discharge; a receipt in full, which bars a further demand. You can produce acquittances For such a sum, from special officers. Shak.

municated 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.

eed when it begins to germinate; the plumule in germination; -- so called from its spiral form.

ich the first or the last letters of the lines, or certain other letters, taken in order, form a name, word, phrase, or motto.

One of the small pedestals, for statues or other ornaments, placed on the apex and at the basal angles of a pediment. Acroteria are also sometimes placed upon the gables in Gothic architecture. J. H. Parker.

or doing; the exercise of power, or the effect, of which power exerted is the cause; a performance; a deed. That best portion of a good man's life, His little, nameless, unremembered acts Of kindness and of love. Wordsworth. Hence, in specific uses:

A large division of Anthozoa, including those which have simple tentacles and do not form stony corals. Sometimes, in a wider sense, applied to all the Anthozoa, expert the Alcyonaria, whether forming corals or not.

Doing duty for another; officiating; as, an superintendent.

An animal of the class Anthozoa, and family Actinidæ. From a resemblance to flowers in form and color, they are often called animal flowers and sea anemones. [See Polyp.].

Having a radiated form, like a sea anemone.

An instrument for measuring and recording the variations in the actinic or chemical force of rays of light. Nichol.

Having the form of rays; radiated, as an actinia.

An instrument for measuring the direct heating power of the sun's rays.