- a variant of apo-: aphelion
Collins Concise English Dictionary © HarperCollins Publishers::
ap- prefix
WordReference Random House Unabridged Dictionary of American English © 2026
A•po
(ä′pô),USA pronunciation n.
apo-,
A.P.O.,
- Place Namesan active volcano in the S Philippines, on S Mindanao: highest peak in the Philippines. 9690 ft. (2954 m).
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).
- Greek, prefixal use of apó; akin to off, Sanskrit apa, Latin ab
A.P.O.,
- MilitaryArmy & Air Force Post Office.
Collins Concise English Dictionary © HarperCollins Publishers::
apo-, ap- prefix
- away from; off: apogee
- indicating separation of: apocarpous
'ap-' also found in these entries (note: many are not synonyms or translations):
ap
- aphelion
- apo-
- Dafydd ap Gruffudd
- Dafydd ap Gwilym
- Llewelyn I
- Llewelyn II
- Llywelyn ap Gruffudd
- Llywelyn ap Iorwerth
- ad
- Adam's apple
- adept
- Air Police
- American crab apple
- American plan
- Apalachee Bay
- apastron
- apathetic
- Apennine Mountains
- aperient
- aperture
- aperture mask
- aperture ratio
- aperture synthesis
- Apgar score
- apheliotropic
- apheresis
- aphesis
- aphorize
- aphthous fever
- apish
- aplanatic
- apnea
- Apo
- apocarpous
- apocenter
- apodictic
- apogamy
- apogee
- apogeotropism
- apograph
- Apollyon
- apologue
- apomixis
- apophthegm
- apoplectic
- apoplexy
- aposematic
- apostolic
- apostolic age