- 密码子 mìmǎzi codon(biochemistry) codon
- 密码学 mìmǎxué cryptography
- 密码锁 mìmǎsuǒ combination lock
- 反密码子 fǎnmìmǎzi anticodon(biochemistry) anticodon
- 摩斯密码 Mósīmìmǎ Morse code
- 密码保护 mìmǎbǎohù password protection
- 密码电报 mìmǎdiànbào coded telegramA telegram or cable message sent in cipher or code to ensure the secrecy of the content.