It's possible you're thinking of a different word or root:
* "Opi-": This is a root word from Greek meaning "seeing" or "vision." It appears in words like:
* Optician: A person who makes and sells eyeglasses.
* Optic: Relating to the eye or sight.
* Optometrist: A healthcare professional who examines eyes and prescribes corrective lenses.
* "Opiate": This is a word, not a root, and it refers to a drug that induces sleep and relieves pain. It comes from the Latin "opium".
If you have a specific word in mind, please provide more context so I can assist you better!