carbonic acid / Clipping of 炭酸飲料 (tansan inryō, “carbonated drink”).

(chemistry) nitric acid (HNO₃)

thirty

prose

acidity

sankyoku, a traditional Japanese ensemble consisting of three instruments: shakuhachi, shamisen, and koto (formerly kokyu, shamisen, and koto)

(uncommon) tripod

the three types of arms made out of leather: armor, helmet, and shield / in traditional Japanese cosmology, a general term for the three years that often accompanied change: kakumei, kakuun, and kakurei

coral

(chemistry) oxide (binary compound of oxygen)