—v.t. 1. to fulfill the desires, expectations, needs, or demands of (a person, the mind, etc.); give full contentment to: The hearty meal satisfied him. 2. to put an end to (a desire, want, need, etc.) by sufficient or ample provision: The hearty meal satisfied his hunger. 3. to give assurance to; convince: to satisfy oneself by investigation. 4. to answer sufficiently, as an objection.
5. to solve or dispel, as a doubt.
6. to discharge fully (a debt, obligation, etc.).
7. to make reparation to or for: to satisfy an offended person; to satisfy a wrong. 8. to pay (a creditor).
9. Math. a. to fulfill the requirements or conditions of: to satisfy a theorem. b. (of a value of an unknown) to change (an equation) into an identity when substituted for the unknown: x = 2 satisfies 3x = 6.