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See Achæan, Achaian.

A small, dry, indehiscent fruit, containing a single seed, as in the buttercup; -- called a naked seed by the earlier botanists. [Written also akene and achænium.]

That aches; continuously painful. See Ache. -- Ach"ing*ly, adv. The aching heart, the aching head. Longfellow.

Seeds of the annotto tree; also, the coloring matter, annotto.

ed by other, and light emerges from the compound lens undecomposed. -- Achromatic prism. See Prism. -- Achromatic telescope, or microscope, one in which the chromatic aberration is corrected, usually by means of a compound or achromatic object glass, and which gives images free from extraneous color.…

See Acronyc.

Dextrin not colorable by iodine. See Dextrin.

Containing seeds or stones of grapes, or grains like them.

A group of suctorial Infusoria, which in the adult stage are stationary. See Suctoria.

ons, having the body armed with bony scales, and the mouth on the under side of the head. See Sturgeon.

See Acolythist.

See Acorn-shell.

One of the sessile cirripeds; a barnacle of the genus Balanus. See Barnacle.

Having no seed lobes, as the dodder; also applied to plants which have no true seeds, as ferns, mosses, etc.

Personally known; familiar. See To be acquainted with, under Acquaint, v. t.

A plant of the highest class of cryptograms, including the ferns, etc. See Cryptogamia. The Age of Acrogens (Geol.), the age of coal plants, or the carboniferous era.

The sprout at the end of a seed when it begins to germinate; the plumule in germination; -- so called from its spiral form.

Obliquely; athwart; amiss; awry. [Obs.] The squint-eyed Pharisees look across at all the actions of Christ. Bp. Hall.

ines or stanzas begin with the letters of the alphabet in regular order (as Psalm cxix.). See Abecedarian. Double acrostic, a species of enigma, in which words are to be guessed whose initial and final letters form other words.

f reality or real existence as opposed to a possibility or possible existence. [Obs.] The seeds of plants are not at first in act, but in possibility, what they afterward grow to be. Hooker.