理科(りか) りか noun science (school subject) education 1. science The natural sciences as a school subject, typically including physics, chemistry, biology, and earth science. 理科(りか)の実験(じっけん)が好(す)きだ。🔊 I like science experiments. 理科(りか)は得意(とくい)ですか。🔊 Are you good at science? 理科(りか)室(しつ)で授業(じゅぎょう)がある。🔊 There is a class in the science room. Usage: Refers to natural sciences as a school subject, especially in elementary and middle school.Compounds理科(りか)室(しつ) (science room/laboratory)理科(りか)系(けい) (science track/field)理科(りか)離(ばな)れ (decline in interest in science)School subjects国語(こくご) (Japanese language)算数(さんすう)/数学(すうがく) (arithmetic/mathematics)社会(しゃかい) (social studies)英語(えいご) (English)Note: In higher education, specific sciences like 物理(ぶつり) (physics), 化学(かがく) (chemistry), 生物(せいぶつ) (biology) are taught separately. Related Words Related: 科学(かがく) (science (general)) Compare: 自然(しぜん)科学(かがく) (natural science) general Added 2026.1.13 16:50 · Revised 2026.9.2 12:02 03500/03994_rika