apex

[ ey-peks ]
See synonyms for apex on Thesaurus.com
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.

  1. Astronomy. solar apex.

Origin of apex

1
Borrowed into English from Latin around 1595–1605

Words Nearby apex

Other definitions for APEX (2 of 2)

APEX
[ ey-peks ]

noun
  1. a type of international airfare offering reduced rates for extended stays that are booked in advance.

Origin of APEX

2
First recorded in 1970–75; A(dvance) P(urchase) Ex(cursion)

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use apex in a sentence

British Dictionary definitions for apex (1 of 2)

apex

/ (ˈeɪpɛks) /


nounplural apexes or apices (ˈæpɪˌsiːz, ˈeɪ-)
  1. the highest point; vertex

  2. the pointed end or tip of something

  1. a pinnacle or high point, as of a career, etc

  2. 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

Origin of apex

1
C17: from Latin: point

British Dictionary definitions for APEX (2 of 2)

APEX

/ (ˈeɪpɛks) /


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

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

Scientific definitions for apex

apex

[ āpĕks ]


  1. The highest point, especially the vertex of a triangle, cone, or pyramid.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.