in·ter·ac·tant 
(ĭn′tər-ăktənt)
(ĭn′tər-ăktənt)n.
One that interacts, especially any of the substances that are part of a chemical interaction.
[INTERACT + -ANT.]
- put someone up to
- put something over on
- putt
- puttanesca
- puttee
- putter
- putter
- putter
- putterer
- put the arm/bite/squeeze on
- put the arm on
- put the bite on
- put the finger on
- put the lie to
- put the make/moves on
- put the make on
- put the moves on
- put the screws on
- put the screws to
- put the screws to/on
- put the skids on
- put the squeeze on
- put through
- put through paces
- put through someone's paces