- 合理化 hélǐhuà rationalizeto make logical or provide a justification for an action or belief
- 物理化学 wùlǐhuàxué physical chemistry
- 数理化 shùlǐhuà math, physics, chemistrymathematics, physics and chemistry (abbreviation for [[数学|數學|shu4 xue2]], [[物理|物理|wu4 li3]], and [[化学|化學|hua4 xue2]])
- 理化因素 lǐhuàyīnsù physicochemical factorsphysical and chemical factors
