Определение alpha privative в Английский Язык Английский Язык словарь
The prefix a- (or an- when prefixing a root which begins with a vowel) found in some English words of Greek derivation. It expresses negation or absence. The prefix has cognates in other Indo-European languages, including in- in Latin and un- in English
The prefix a- or an- before vowels, used in Greek and in English words borrowed from Greek to express absence or negation