It's likely a misspelling or a made-up word. If you're looking for a word related to massage, you might be thinking of:
* Massage: The actual act of applying pressure to the body using hands, fingers, or a device.
* Massager: A person who performs massages or a device that performs massages.
* Massage therapy: The practice of using massage techniques to treat various conditions and promote relaxation.
If you can provide more context about where you encountered the word "massagenous," I may be able to offer a more specific suggestion.