an active volcano in the S Philippines, on S Mindanao: highest peak in the Philippines. 9690 feet (2954 meters).
Dictionary.com Unabridged
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).
prefix meaning "from, away from, separate," from Gk. apo, from PIE base *apo- "off, away" (cf. Skt. apa "away from," Avestan apa "away from," L. ab "away from, from," Goth. af, O.E. of "away from").