1. chemical operations warfare using chemical agents to kill or injure or incapacitate the enemy
  2. trading operations financial transactions at a brokerage
  3. Gymnocarpium robertianum yellow-green fern of rocky areas of northern hemisphere
  4. sex-change operation surgical procedures and hormonal treatments designed to alter a person's sexual characteristics so that the resemble those of the opposite sex
  5. printing operation an operation that controls the printing or display of information
  6. concurrent operation two or more operations performed at the same time
  7. mathematical operation (mathematics) calculation by mathematical methods
  8. asynchronous operation operations that occur without a regular or predictable time relation to other events
  9. computer operation an elementary operation that a computer is designed and built to perform
  10. combined operation a military operation carried out cooperatively by two or more allied nations or a military operation carried out by coordination of sea, land, and air forces
  11. machine operation an elementary operation that a computer is designed and built to perform
  12. monadic operation an operation with exactly one operand
  13. genetic fingerprint biometric identification obtained by examining a person's unique sequence of DNA base pairs; often used for evidence in criminal law cases
  14. communication the activity of conveying information
  15. Geranium robertianum a sticky low herb with small reddish-purple flowers
  16. peacekeeping operation the activity of keeping the peace by military forces
  17. synchronous operation operations that are initiated predictably by a clock
  18. cognitive operation the performance of some composite cognitive activity
  19. coming attraction a movie that is advertised to draw customers
  20. genetic fingerprinting the procedure of analyzing the DNA in samples of a person's body tissue or body fluid for the purpose of identification