• synonyms


[ey-puh-seez, ap-uh-]
  1. a plural of apex.
Show More


noun, plural a·pex·es, a·pi·ces [ey-puh-seez, ap-uh-] /ˈeɪ pəˌsiz, ˈæp ə-/.
  1. the tip, point, or vertex; summit.
  2. climax; peak; acme: His election to the presidency was the apex of his career.
  3. Astronomy. solar apex.
Show More

Origin of apex

Borrowed into English from Latin around 1595–1605
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for apices

culmination, pinnacle, apogee, cusp, acme, zenith, point, climax, tip, crown, maximum, roof, height, vertex, summit, peak, spire, crest, meridian, tops

Examples from the Web for apices

Historical Examples of apices

  • The itching is intense, and in consequence their apices are excoriated.

    Essentials of Diseases of the Skin

    Henry Weightman Stelwagon

  • The palpi are small and narrow, with long bristles at their apices.

  • The two apices differ very nearly 180° in right ascension and about 120° in declination.

    Curiosities of the Sky

    Garrett Serviss

  • As many as a dozen small ulcers were seen at the apices of the enlarged follicles.

  • Comparisons of the bases and the apices of leaves of different varieties often show distinguishing marks.

British Dictionary definitions for apices


  1. a plural of apex
Show More


n acronym for
  1. Advance Purchase Excursion: a reduced airline or long-distance rail fare that must be paid a specified number of days in advance
  2. (in Britain) Association of Professional, Executive, Clerical, and Computer Staff
Show More


noun plural apexes or apices (ˈæpɪˌsiːz, ˈeɪ-)
  1. the highest point; vertex
  2. the pointed end or tip of something
  3. a pinnacle or high point, as of a career, etc
  4. Also called: solar apex astronomy the point on the celestial sphere, lying in the constellation Hercules, towards which the sun appears to move at a velocity of 20 kilometres per second relative to the nearest stars
Show More

Word Origin for apex

C17: from Latin: point
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 apices



c.1600, from Latin apex "summit, peak, tip, top, extreme end;" probably related to apere "to fasten, fix," hence "the tip of anything" (one of the meanings in Latin was "small rod at the top of the flamen's cap"), from PIE *ap- "to take, reach." Proper plural is apices.

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

apices in Medicine


n. pl. a•pex•es
  1. The pointed end of a conical or pyramidal structure.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

apices in Science


  1. The highest point, especially the vertex of a triangle, cone, or pyramid.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.