abbreviationEnglishOxford American Thesaurusabbreviation noun 1 the abbreviation “mAh” stands for milliamp hours: shortened form, short form, contraction, elision, acronym, initialism, symbol, diminutive. ▷antonyms full form. 2 she felt a slight irritation at the abbreviation of her name: shortening, reduction, cutting, cutting short/down, contraction, condensation, compression, abridgment, truncation, clipping, cropping, paring down, pruning, shrinking, constricting, telescoping. ▷antonyms expansion.