阿秒 Save Sign in to save words āmiǎo ㄚ ㄇㄧㄠˇ attosecond (10⁻¹⁸ s) physics Character by character 阿(ā)prefix used before monosyllabic names, kinship terms etc to indicate familiarity 秒(miǎo)second A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0