(mathematics) imaginary root

(Buddhism) the nose and the faculty of smelling, one of the 五根 (gokon, “five indriyia”) or 六根 (rokkon, “six indriya”) / (anatomy) the root of the nose; the nasal root

(soil science) rhizosphere

baseless, unsubstantiated, having no evidence

(fiction) depicting the fiery spirit of sports; spokon

Synonym of 黄昏 (tasogare, “dusk; twilight”) / Synonym of 黄昏時 (tasogaredoki, “dusk; twilight”)

A group of onmitsu, government-employed undercover agents, established by the 8th Tokugawa shogun, Tokugawa Yoshimune (1684–1751). Sometimes described as ninja.

eradication

radically

(mathematics) a cube root, a cubic root