農学: agronomy / 能楽: a Noh play

(mahjong) big three dragons: a 役満 (yakuman, “limit”) hand with triplets or quads of each of the 三元牌 (sangenpai, “dragon tiles”)

“third-category beer”, a beer-like alcoholic beverage that is not classified as either beer or happōshu in the Japanese tax code

synonym of 第三のビール (“third-category beer”)

(uranography) Winter Triangle - a bright asterism of the northern winter sky. Its corners are the stars Betelgeuse, Procyon, and Sirius.

(uranography) Summer Triangle - a bright asterism of the northern summer sky. Its corners are the stars Altair, Deneb, and Vega.

World War III

algebraic geometry

代数幾何学: algebraic geometry

algebra