catflap.org Online Dictionary Query

  OTP
     a.
     1 (lb en electronics) (init of en one-time programmable)
     2 (lb en instant messaging) (init of en on the phone)
     n.
     1 (lb en cryptography) (initialism of en one-time pad)
     2 (lb en computing) {initialism of|en|(w: one-time
  password)|nodot=yes}: a password that is valid for only one login
  session or transaction.
     3 (lb en fandom) (initialism of en one true pair (or pairing)
  nodot=yes): the romantic pairing preferred by an author or reader of fan
  fiction.
     n.
     1 (lb en telecommunications) {initialism of|en|(w: Open Telecom
  Platform)}
     {initialism+of|en|(w:+Opposite+Track+Path)" rel="nofollow">2 (lb en computing) {initialism of|en|(w: Opposite Track Path)