an active volcano in the S Philippines, on S Mindanao: highest peak in the Philippines. 9690 feet (2954 meters).


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).
Also especially before a vowel, ap-.

Origin of apo-

< Greek, prefixal use of apó; akin to off, Sanskrit apa, Latin ab


or APO

Army & Air Force Post Office.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for apo

Historical Examples of apo

  • Their home is at the foot of the volcano of Apo (Davao, in Mindanao).

  • On arrival they had checked in at the Apo View Hotel and had lost no time in finding local constabulary headquarters.

    The Pirates of Shan

    Harold Leland Goodwin

  • All kin of the same generation as his grandparents, great-grandparents, etc., are apo (grandparents).

    Ifugao Law

    R. F. Burton

  • Nearly every evening, near sundown, I see a pair of wild pigeons homing toward the crest of Apo.


    Charles Goff Thomson

  • The dark crept swiftly up the slopes as if envious of the ruby crown set on Apo's forehead by the abdicating sun.


    Charles Goff Thomson

British Dictionary definitions for apo



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




away from; offapogee
indicating separation ofapocarpous
indicating a lack or absence ofapogamy
indicating derivation from or relationship toapomorphine

Word Origin for apo-

from Greek apo away, off
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for apo


before vowels ap-, word-forming element meaning "from, away from, separate, free from," from Greek apo "from, away from; after; in descent from," in compounds, "from, asunder, away, off; finishing, completing; ceasing from; back again," from PIE root *apo- "off, away" (cf. Sanskrit apa "away from," Avestan apa "away from," Latin ab "away from, from," Gothic af, Old English of "away from").

Online Etymology Dictionary, © 2010 Douglas Harper

apo in Medicine



Away from; off:aponeurosis.
Without; lacking; not:apoferritin.
Related to; derived from:apomorphine.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.