1. contagious abortion an infectious disease of domestic animals often resulting in spontaneous abortion; transmittable to human beings
  2. spontaneous abortion a natural loss of the products of conception
  3. control operation an operation that controls the recording or processing or transmission of interpretation of data
  4. contribution a voluntary gift made to some worthwhile cause
  5. countersubversion the aspect of counterintelligence designed to detect and prevent subversive activities
  6. contemplation a calm, lengthy, intent consideration
  7. monadic operation an operation with exactly one operand
  8. contrition sorrow for sin arising from fear of damnation
  9. integration the act of combining into a whole
  10. cognitive operation the performance of some composite cognitive activity
  11. contortion a tortuous and twisted shape or position
  12. contestation a contentious speech act
  13. inspiration arousal of the mind to unusual activity or creativity
  14. contact action acceleration of a chemical reaction induced the presence of material that is chemically unchanged at the end of the reaction
  15. interspersion the act of combining one thing at intervals among other things
  16. contraption a device or control that is very useful for a particular job
  17. contagious capable of being transmitted by infection
  18. conduction the transmission of heat or electricity or sound
  19. contiguous having a common boundary or edge
  20. induced abortion a deliberate termination of pregnancy