(slang) monster cock

(mathematics) imaginary root

(agriculture) stubble left from cut grass or other plant

(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

Kyūjitai form of 本拠地

(relativity) the theory of relativity

(physics) theoretical physics