| jiǎ | armor/first of 10 heavenly stems 十天干/first in order/letter "A" or roman "I" in list "A, B, C", or "I, II, III" etc/first party (in legal contract, usually written 甲方, as opposed to second party 乙方)/methyl |
| 甲 | first of the ten heavenly stems 十天干 |
| 甲乙 | first two of the ten heavenly stems 十天干 |
| 甲二醇 | methylene glycol |
| 甲亢 | hyperthyroidism abbr. for 甲狀腺功能亢進|甲状腺功能亢进 |
| 甲仙 | Jiaxian or Chiahsien township in Kaohsiung county 高雄縣|高雄县 |
| 甲仙乡 | Jiaxian or Chiahsien township in Kaohsiung county 高雄縣|高雄县 |
| 甲兵 | armour and weaponry; military equipment; soldier in armour |
| 甲冑 | variant of 甲胄 |
| 甲午 | thirty first year A7 of the 60 year cycle, e.g. 1954 or 2014 cf 甲午戰爭|甲午战争, the first Sino-Japanese War of 1894-95 |
| 甲午战争 | the first Sino-Japanese War of 1894-95 |
| 甲叉 | methene; methylene |
| 甲周表皮 | [Anatomy] perionychium |
| 甲型 | type A type I alpha- |
| 甲型肝炎 | hepatitis A |
| 甲基 | methyl group (chemistry) |
| 甲基丙烯酸 | methacrylic acid |
| 甲基丙烯酸酯 | [Chemistry] methacrylate ester |
| 甲基化酒精 | methylated spirit; methylated spirits; meths; surgical spirit; methylated alcohol |
| 甲基化酶 | methylase |
| 甲基吡啶 | picolyl; picoline; methylpyridine |