(mathematics) concentricity / support for someone

be of one heart and mind with someone; stand by someone and support and cooperate with them

public road

hutong

adjectival noun (abbreviation of 形容動詞)

(slang) Abbreviation of 童貞 (dōtei).

(physics) ballistics

(calculus) derived function - of a function, another function, the value of which for any value of the independent variable is the instantaneous rate of change of the given function at that value of the independent variable.

Tokyo, Hokkaido, Osaka and Kyoto Prefectures and other prefectures (collectively, as the prefectural (prefecture-level) administrative divisions of Japan)

Kyūjitai form of 剣道 (“kendo”)