From Longman Dictionary of Contemporary EnglishPTOPTO1 /ˌpiː tiː ˈəʊ $ -ˈoʊ/ TCNWRITE (please turn over) written at the bottom of a page to tell the reader to look at the next pagePTOPTO2 noun [countable] American English SES (Parent–Teacher Organization) an organization of parents and teachers that tries to help and improve a particular school SYN PTA British English
Examples from the Corpus
PTO• Pressure groups, boosters groups, PTOs?From Longman Business DictionaryPTOPTO written abbreviation for PLEASE TURN OVER; written at the bottom of a page 