Adumbration :: Adumbration (n.) The shadow or outlines of a figure.
Aeration :: Aeration (n.) Exposure to the free action of the air; airing; as, aeration of soil, of spawn, etc..
Aeration :: Aeration (n.) A change produced in the blood by exposure to the air in respiration; oxygenation of the blood in respiration; arterialization.
Aeration :: Aeration (n.) The act or preparation of charging with carbonic acid gas or with oxygen.
Aggeneration :: Aggeneration (n.) The act of producing in addition.
Aggeration :: Aggeration (n.) A heaping up; accumulation; as, aggerations of sand..
Agglomeration :: Agglomeration (n.) The act or process of collecting in a mass; a heaping together.
Agglomeration :: Agglomeration (n.) State of being collected in a mass; a mass; cluster.
Alliteration :: Alliteration (n.) The repetition of the same letter at the beginning of two or more words immediately succeeding each other, or at short intervals; as in the following lines: -.
Alteration :: Alteration (n.) The act of altering or making different.
Alteration :: Alteration (n.) The state of being altered; a change made in the form or nature of a thing; changed condition.
Amelioration :: Amelioration (n.) The act of ameliorating, or the state of being ameliorated; making or becoming better; improvement; melioration..
Arbitration :: Arbitration (n.) The hearing and determination of a cause between parties in controversy, by a person or persons chosen by the parties..
Asperation :: Asperation (n.) The act of asperating; a making or becoming rough.
Aspiration :: Aspiration (n.) The act of aspirating; the pronunciation of a letter with a full or strong emission of breath; an aspirated sound.
Aspiration :: Aspiration (n.) The act of breathing; a breath; an inspiration.
Aspiration :: Aspiration (n.) The act of aspiring of a ardently desiring; strong wish; high desire.
Calibration :: Calibration (n.) The process of estimating the caliber a tube, as of a thermometer tube, in order to graduate it to a scale of degrees; also, more generally, the determination of the true value of the spaces in any graduated instrument..