Meaning: ちゅうせいn. (Kanji=中世) medieval times, Middle Ages, period of time from approximately 5 AD to 1350 ADn. (Kanji=中世) Middle Ages, period in European history which began after the collapse of the West Roman Empire in the 4th and 5th centuries and continued until the Renaissance in 15th centuryn. (Kanji=中性) neuter gender, grammatical form which is neither feminine nor masculine; neutrality, neuter, state of being neutral; sterility; indifferencen. (Kanji=中正) impartiality, fairness, objectivity, neutralityn. (Kanji=忠誠) loyalty, sincerity, faithfulnessadj. (Kanji=忠誠な) loyal, faithful