徹てっ底てい究きゅう明めいMeaningsNoun1. thorough investigation; complete inquiryKanji used徹penetrate底bottom究research明brightComposed of徹てっ底ていthoroughness; completeness; consistency; thorough enforcement; seeing to it that a policy, etc. is carried out without exceptionNoun究きゅう明めいinvestigation (esp. in academic and scientific contexts); finding out the facts; bringing (a matter) to light; inquiring intoNoun