O

object calls
object configuration methods
object model
object-oriented, 2^nd, 3^rd, 4^th, 5^th, 6^th, 7^th, 8^th
  encapsulation
  object-oriented design
Open Closed Principle, 2^nd
ordered mocks
organizational change
  bottom-up
  top-down
organizational culture
organizational structure
Osherove.ThreadTester
outside consultant
  advantages
overriding
overspecification
overspecified test
  features