(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)

leader

(grammar) separable verb

calligrapher

cover in the news, report in the news

self-executing (computer file)

cave