茶碱 chájiǎn theophylline Definitions Defs Origin Strokes Stroke Words Sentences Sents 茶 chá noun abbreviation of 茶叶 茶葉 cháyè tea leaves tea leaves; tea碱 鹼 jiǎn base; alkali (chemistry) a substance that can react with an acid to form a salt, such as a compound that releases hydroxide ions in water, accepts protons, or donates electron pairs
