What does 体系 mean?
体系 is a Japanese noun meaning “system, organization” in English. It is written as 体系 in kanji, たいけい in hiragana, and taikei in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
彼らはその体系を大変な思索と労力を費やして仕上げた。
They worked out the system with much thought and labor.