恒定 Traditional 恆定 héng dìng 🔊 constant + Review this word Meanings héng dìng 恆定 constant Its characters 恒héngpermanent定dìngto fix; to set; to make definiteHSK 4 Words with 恒定 守恒定律 shǒu héng dìng lǜ conservation law (physics)