(grammar) Short for 四段活用 (yodan katsuyō): quadrigrade conjugation

a male given name

a philosophy in Shintoism; within one's own heart there exists four 'souls', in either their positive (直霊(なおび) (naobi) and/or negative (禍津日(まがつひ) (magatsuhi) aspects, and that it is the interactions between these four souls, in either aspect, and in varying amounts and levels, that can influence the ups and downs in that person's character, good or bad.

a surname

Synonym of 三角錐 (sankakusui, “triangular pyramid”); a tetrahedron

Short for 四輪駆動. four-wheel drive (vehicle)

bitter almond oil dissolved in water

bitter almond

sulphur tuft, Hypholoma fasciculare; a poisonous mushroom species endemic to Europe, Asia, and North America

magnesium, Mg