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[ah-paw] /ˈɑ pɔ/
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. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2017.
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Examples from the Web for Apo
Historical Examples
  • 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.

    Terry 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.

    Terry Charles Goff Thomson
  • Apo is the name given to him who governs, and that name is applied by these Indians to him who has any authority in the village.

  • The ruling spirit or spirits is “Apo sen diot” (“Apo” meaning lord or sir and “diot” being a corruption of Dios).

  • Apo yad adrim puruhta dardar vir bhuvat saram prvyaṁ te; Ṛigv.

    Zoological Mythology (Volume II) Angelo de Gubernatis
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; off: apogee
indicating separation of: apocarpous
indicating a lack or absence of: apogamy
indicating derivation from or relationship to: apomorphine
Word Origin
from Greek apo away, off
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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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
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Apo in Medicine

apo- or ap-

  1. Away from; off: aponeurosis.

  2. Separate: apocrine.

  3. Without; lacking; not: apoferritin.

  4. 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.
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