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Acute
a.
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Attended with symptoms of some degree of severity, and coming speedily to a crisis; -- opposed to chronic; as, an acute disease.
Acute
v. t.
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To give an acute sound to; as, he acutes his rising inflection too much.
Acute-angled
a.
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Having acute angles; as, an acute-angled triangle, a triangle with every one of its angles less than a right angle.
Acutely
adv.
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In an acute manner; sharply; keenly; with nice discrimination.
Acuteness
n.
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The quality of being acute or pointed; sharpness; as, the acuteness of an angle.
Acuteness
n.
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The faculty of nice discernment or perception; acumen; keenness; sharpness; sensitiveness; -- applied to the senses, or the understanding. By acuteness of feeling, we perceive small objects or slight impressions: by acuteness of intellect, we discern nice distinctions.
Acuteness
n.
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Shrillness; high pitch; -- said of sounds.
Acuteness
n.
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Violence of a disease, which brings it speedily to a crisis.
Acutifoliate
a.
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Having sharp-pointed leaves.
Acutilobate
a.
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Having acute lobes, as some leaves.
Ad-
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As a prefix ad- assumes the forms ac-, af-, ag-, al-, an-, ap-, ar-, as-, at-, assimilating the d with the first letter of the word to which ad- is prefixed. It remains unchanged before vowels, and before d, h, j, m, v. Examples: adduce, adhere, adjacent, admit, advent, accord, affect, aggregate, allude, annex, appear, etc. It becomes ac- before qu, as in acquiesce.
Adact
v. t.
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To compel; to drive.
Adactyl
a.
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Alt. of Adactylous
Adactylous
a.
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Without fingers or without toes.
Adactylous
a.
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Without claws on the feet (of crustaceous animals).
Adage
n.
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An old saying, which has obtained credit by long use; a proverb.
Adagial
a.
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Pertaining to an adage; proverbial.
Adagio
a. & adv.
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Slow; slowly, leisurely, and gracefully. When repeated, adagio, adagio, it directs the movement to be very slow.
Adagio
n.
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A piece of music in adagio time; a slow movement; as, an adagio of Haydn.
Adam
n.
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The name given in the Bible to the first man, the progenitor of the human race.
Adam
n.
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"Original sin;" human frailty.
Adamant
n.
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A stone imagined by some to be of impenetrable hardness; a name given to the diamond and other substances of extreme hardness; but in modern mineralogy it has no technical signification. It is now a rhetorical or poetical name for the embodiment of impenetrable hardness.
Adamant
n.
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Lodestone; magnet.
Adamantean
a.
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Of adamant; hard as adamant.
Adamantine
a.
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Made of adamant, or having the qualities of adamant; incapable of being broken, dissolved, or penetrated; as, adamantine bonds or chains.
Adamantine
a.
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Like the diamond in hardness or luster.
Adambulacral
a.
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Next to the ambulacra; as, the adambulacral ossicles of the starfish.
Adamic
a.
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Alt. of Adamical
Adamical
a.
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Of or pertaining to Adam, or resembling him.
Adamite
n.
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A descendant of Adam; a human being.