Compounds of 開

• 開発
  (n,adj-no,vs) development
  exploitation
  (P)
• 開扉
  (n,vs) opening a door
• 開票
  (n,vs) counting ballots
  tally (of votes)
  (P)
• 開封
  (n,vs) unsealed letter
  breaking the seal
  (P)
• 開腹
  (n,vs) making a surgical incision in the abdomen
• 開平
  (n,vs) extraction of square root
• 開閉
  (n,vs) opening and shutting
  (P)
• 開放
  (n,vs) open
  throw open
  liberalization
  liberalisation
  (P)
• 開方
  (n) extraction of roots
• 開法
  (n) (math) extraction of roots
  evolution
• 開幕
  (n,vs,adj-no) raising the curtain
  (P)
• 開明
  (n) civilization
  civilisation
  enlightenment
• 開門
  (n,vs) opening gate
• 開立
  (n,vs) extraction of cubic root
• 開豁
  (adj-na,n) open
  openminded
• 開鑿
  (oK) (n,vs) excavation
  cutting
  digging
• 開闢
  (n,vs) beginnings
  creation
  founding (of empire)
• 公開
  (n,vs,adj-no) open to the public
  (P)
• 再開
  (n,vs) reopening
  resumption
  restarting
  (P)
• 散開
  (n,vs) deployment
  spreading out
  dispersing
  dispersal
• 新開
  (n) opening (of uncultivated land)
• 切開
  (n,vs) incision
  operation
  section
• 全開
  (n,vs,adj-no) opening fully
  full throttle
• 疎開
  (n,vs) dispersal
  evacuation
  deployment
  (P)
• 創開
  (n,vs) grand opening
• 続開
  (n,vs) resumption
  continuing
• 打開
  (n,vs) break in the deadlock
  (P)
• 展開
  (n,vs) (1) development
  (2) expansion (opposite of compression)
  (P)
• 半開
  (n,vs,adj-no) semicivilized
  semicivilised
• 満開
  (n,vs,adj-no) full bloom
  (P)