| opera | usable for a specific purpose |
|---|---|
| opera | fit or ready for use or service |
| opera | a patron of the opera |
| opera | a quantity upon which a mathematical operation is performed |
| opera | having influence or producing an effect |
| opera | conditioning in which an operant response is brought under stimulus control by virtue of presenting reinforcement contingent upon the occurrence of the operant response |
| opera | perform surgery on |
| opera | happen |
| opera | perform a movement in military or naval tactics in order to secure an advantage in attack or defense |
| opera | handle and cause to function |
| opera | keep engaged |
| opera | perform as expected when applied |