See Alpha Acid Units

Alpha Acid Units. Synonymous with Home Bitterness Units. (HBU) A bitterness measurement system that allows the brewer to consistently control the bitterness level of his/her beer. As the amount of resin that is responsible for bitterness in a hop (alpha acid) varies from year to year, simply adding x ounces of a hop variety in a beer will not necessarily produce the same beer. Thus the bitterness level of a recipe is given in AAU, where 1 AAU = (hop alpha acid %) X (hop weight in ounces). This factors in the varying Alpha acid content of hops from year to year.

Alpha acid units. The measurement, in percentage of alpha acid, of the potential bitterness in hops.

Asparagine

Aviation Underwriters our insurance underwriters. (See Willis Corroon.)

Agreement Among Underwriters

Assigned Amount Unit. An emission certificate as defined by the Kyoto Protocol. Annex B countries can use AAUs to fulfill their obligations as stipulated in Article 3, Paragraph 1 of the Kyoto Protocol.

Once patients have been dealt with in A & E they often move to the AAU until a bed is free on the ward or while they need overnight observations. They can also be admitted directly to AAU from their GP. Doctors and surgeons from all departments see patients on AAU.

Amateur Athletic Union

American Association of Universities

Association of American Universities