PTO

• (initialism):

  Audio (US):

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PTO

1. Initialism of Patent and Trademark Office
   2. United States Patent and Trademark Office.

      Synonym: USPTO (the more common initialism for this entity)

• United States Patent and Trademark Office on Wikipedia.Wikipedia

PTO (plural PTOs)

2. Initialism of parent-teacher organization.

   Synonyms: PTA, parent-teacher association

4. Initialism of paid time off.

   Hypernym: time off

   Hyponyms: sick day, vacation day, personal day

   • 2026 January 25, VIC [username], “Evershine 2026 New Year Plans [reply]”, in Steam Community‎^[1], via Steam, archived from the original on 5 February 2026:

     I'm requesting PTO for this drop, I cannot overstate my excitement. Excellent game series, I'll play them forever.

6. Initialism of power take-off, a powered shaft for driving auxiliary equipment.
7. (logistics) Initialism of pick-to-order.
   • 2004 July 28, Jari Partanen and Harri Haapasalo, “Fast production for order fulfillment: Implementing mass customization in electronics industry”, in International Journal of Production Economics, volume 90, number 2, Netherlands, →DOI, pages 213-222:

     In the case of the three strategies MTS, Make-to-Forecast (MTF) and Pick-to-Order (PTO), the allocation of customer orders takes place in the dispatch area. PTO allows the customer to choose from standard items.

PTO

2. Initialism of please turn over (written at the end of the text on a page to say that it continues overleaf).

• OPT, OPt, OTP, TPO, oPt, opt, opt., pot, top