底 dǐde HSK3 bottom Origin Definitions Defs Strokes Stroke Words Sentences Sents Showing: base All meanings 15 dǐ 14 bottom 8end 3background 1base 1record 1de 1 possessive particle 1 1 sentence for 底 (dǐ — base) 在对数运算中,我们通常把十作为底。 zài duìshù yùnsuàn zhōng, wǒmen tōngcháng bǎ shí zuòwéi dǐ. In logarithms, we usually take ten as the base. Source: Dong Chinese Dictionary