(Buddhism) the four kinds of suffering: birth, old age, disease and death

the four gods 青龍(せいりょう) (Seiryō), 朱雀(すざく) (Suzaku), 白虎(びゃっこ) (Byakko), 玄武(げんぶ) (Genbu), imported to Japan from Chinese mythology

(collective) the four different states of the sky corresponding to the four seasons

(collective) Clipping of 四天王 (Shitennō, “Four Heavenly Kings”).

orthoclase

A billion quintillion, 10⁴², or a septillion of dated British or Australian English, in modern Japanese since 17th century.

regular polyhedron

cathode; positive pole; positive electrode

proportionality

to vary directly, to be directly proportional to