機序 is read as きじょ (kijo) and means mechanism.
きじょ
kijo
さようきじょ
mechanism of action (e.g. drug)
きどうたい
riot police
きびん
smart
きげん
safety
きき
device
きみつ
secrecy
きかんじゅう
machine gun
きらい
(sea) mine
きかんし
engineer (on a train, ship, aircraft, etc.)
きび
subtle
きみつひ
secret funds
きじゅう