Japanese edit

For pronunciation and definitions of たいしつ – see the following entries.
体質
[noun] disposition of the body; body type; physique; (medicine) constitution; predisposition
[noun] (by extension) nature (in general)
退室
[noun] departure/exit from a room
[verb] to leave/exit a room
體質
[noun] Kyūjitai form of 体質 (disposition of the body; body type; physique; (medicine) constitution; predisposition)
(This term, たいしつ, is the hiragana spelling of the above terms.)