(grammar) The auxiliary verb that is combined with a past participle to form a compound perfect tense: in English, the verb have; in French, German, and Danish either the equivalent of have or the equivalent of be, depending on the verb.

(computing) Synonym of secondary storage

(linguistics) A language intended to be used by people who do not share a common language.

(aviation) A generator in aircraft or other vehicles for providing electric power to various systems, such as lighting, especially when the main engines are not running.

plural of international auxiliary language

plural of auxiliary power unit

An association founded in 1924 to study the establishment of an international auxiliary language. In 1951, IALA presented Interlingua to the public by publishing the Interlingua-English Dictionary and Interlingua Grammar. Abbreviated IALA.