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les of acetaldehyde: CH3CHO + CH3CHO = H3CH(OH)CH2CO; also, any of various derivatives of this. The same reaction has been applied, under the name of aldol condensation, to the production of many compounds.

To allay or alleviate; to lighten. [Obs.] That shall alegge this bitter blast. Spenser.

A treatise on this science.

ks are both sedimentary and igneous. Although fossils are rare, life certainly existed in this period. -- n.

ng; to correspond (with) exactly; to be alike in all the circumstances to be considered. "This example is on all fours with the other." "No simile can go on all fours." Macaulay.

Allhallows or Hallowmas; a feast day kept in honor of all the saints; also, the season of this festival.

A movement in this time.

An allopathist. Ed. Rev.

Only; merely; singly. [Obs.] This said spirit was not given alonely unto him, but unto all his heirs and posterity. Latimer.

, all trough the course of; during the whole time; throughout. "I have all along declared this to be a neutral paper." Addison. -- To get along, to get on; to make progress, as in business. "She 'll get along in heaven better than you or I." Mrs. Stowe.

Prior to some specified time, either past, present, or future; by this time; previously. "Joseph was in Egypt already." Exod. i. 5. I say unto you, that Elias is come already. Matt. xvii. 12.

Capable of being altered. Our condition in this world is mutable and uncertain, alterable by a thousand accidents. Rogers.

ed by turns; to interchange regularly. The most high God, in all things appertaining unto this life, for sundry wise ends alternates the disposition of good and evil. Grew.

The course of action or the thing offered in place of another. If this demand is refused the alternative is war. Lewis. With no alternative but death. Longfellow.

Grant all this; be it that; supposing that; notwithstanding; though. Although all shall be offended, yet will no I. Mark xiv. 29.

relief; sculptured work in which the figures project more than half their thickness; as, this figure is an alto-rilievo or in alto-rilievo.

The metallic base of alumina. This metal is white, but with a bluish tinge, and is remarkable for its resistance to oxidation, and for its lightness, pertaining a specific gravity of about 2.6. Atomic weight 27.08. Symbol Al. Aluminium bronze or gold, a pale gold- colored alloy of aluminium and copper, used for journal…

Same as Amalgam. They divided this their amalgama into a number of incoherent republics. Burke.

Amazing Europe with her wit." Goldsmith. And all the people were amazed, and said, Is not this the son of David Matt. xii. 23.

e; circumlocution; indirect mode of speech. After many ambages, perspicuously define what this melancholy is. Burton.