理学 lǐxué noun ① (儒家哲学) rationalistic Confucian philosophical school [developed during the Song and Ming dynasties, known to the West as Neo-Confucianism] ② (自然科学) natural science ▸ 理学士 Bachelor of Science ▸ 理学硕士 Master of Science ▸ 理学博士 Doctor of Science |