1
US
Parent-Teacher Organization
The PTO is raising money for a new playground.
a PTO meeting
2
chiefly British
please turn over
Note: PTO is written on the bottom of a page to tell the reader to continue reading on the back of that page.
Cite this Entry
“PTO.” Merriam-Webster.com Simple Definition, Merriam-Webster, https://www.merriam-webster.com/simple/PTO. Accessed 20 Jun. 2026.
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