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• Apo
  Apo

  noun

  an active volcano in the S Philippines, on S Mindanao: highest peak in the Philippines. 9,690 feet (2,954 meters).
• apo-
  apo-

  a prefix occurring originally in loanwords from Greek, where it was joined to verbs, deverbal forms, and other parts of speech. Among its functions in Greek, apo- has the spatial sense “away, off, apart” (apogee; apocope; apostasy; apostrophe ); it occurs with deverbals that denote a response or defense (apodosis; apology ) and is found on verbs having perfective force relative to a corresponding simple verb (apoplexy; aposiopesis ). In modern scientific coinages in English and other languages, apo- marks things that are detached, separate, or derivative (apocarpous; apoenzyme ).
• A.P.O.
  A.P.O.

  abbreviation

  Army & Air Force Post Office.

Apo

¹ American  

[ah-paw] / ˈɑ pɔ /

noun

1. an active volcano in the S Philippines, on S Mindanao: highest peak in the Philippines. 9,690 feet (2,954 meters).

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apo- ² American  

1. a prefix occurring originally in loanwords from Greek, where it was joined to verbs, deverbal forms, and other parts of speech. Among its functions in Greek, apo- has the spatial sense “away, off, apart” (apogee; apocope; apostasy; apostrophe ); it occurs with deverbals that denote a response or defense (apodosis; apology ) and is found on verbs having perfective force relative to a corresponding simple verb (apoplexy; aposiopesis ). In modern scientific coinages in English and other languages, apo- marks things that are detached, separate, or derivative (apocarpous; apoenzyme ).

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A.P.O. ³ American  

Or APO

abbreviation

1. Army & Air Force Post Office.

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apo- ¹ British  

prefix

1. away from; off

   apogee

2. indicating separation of

   apocarpous

3. indicating a lack or absence of

   apogamy

4. indicating derivation from or relationship to

   apomorphine

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Apo ² British  

/ ˈɑːpəʊ /

noun

1. the highest mountain in the Philippines, on SE Mindanao: active volcano with three peaks. Height: 2954 m (9690 ft)

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Etymology

Origin of apo-

From Greek, prefixal use of apó; akin to off, Sanskrit ápa, Latin ab

Example Sentences

Apollo Global Management APO 4.23%increase; green up pointing triangle said this past week that gross returns on its direct origination funds that include investment-grade loans to companies were 0.5%, down from 2.6% a year ago.

From The Wall Street Journal • May 11, 2026

"Thank goodness we started observing a few hours early to set a baseline, because 2 a.m. came, then 3, and we still hadn't observed a change in the star's brightness with APO," Libby-Roberts said.

From Science Daily • Dec. 3, 2024

"Violence in the fishing industry and fish fraud are two ends of the spectrum," Elizabeth Mitchell-Rachin from the APO Board of Directors said to Salon.

From Salon • Apr. 7, 2024

APO ISLAND, the Philippines — The large green sea turtles used to be terrified of humans, scuttling away as fast as they could.

From New York Times • Nov. 9, 2022

The proposal was ratified, and in preparation for the Day of Protest, we closed ranks with the SAIC, the APO, and the Communist Party.

From "Long Walk to Freedom" by Nelson Mandela