Meaning of A in English

A

prep 1. to (a point in space or time, a goal, etc.); 2. at (a point in space or time, a stage of development, etc.);

a (+ inf ) to; also: for (+ gerund );

sala a attender waiting room

[a-]

prefixo verbal [used with verbs and, in combination with verbal suffixes, with nouns and adjectives] to, toward, into (expressing motion to, change into, increase of intensity, etc.)

a-

prefixo [ an- before -h- and vowels; used with nouns and adjectives] a-, an- (= not ...; without, lacking ...)

Interlingua English vocab.      Английский словарь Интерлингва.