深ふかさ優ゆう先せん探たん索さくMeaningsNoun1. depth-first searchKanji used深deep優gentle先before (timewise)探to feel around for索linkComposed of深ふかさdepth; profundityNoun優ゆう先せんpreference; priority; precedence; right of wayNoun探たん索さくsearch; lookup; hunt; (item of) research; exploration; investigationNoun