There are 2 main definitions of apex in English:

Share this entry

apex 1

Syllabification: a·pex
Pronunciation: /ˈāpeks/

noun (plural apexes or apicesˈāpəˌsēzˈapə-)

1The top or highest part of something, especially one forming a point: the living room extends right up into the apex of the roof figurative the apex of his career was when he hoisted aloft the World Cup
More example sentences
  • Crucks, great curving oak trunks arching from ground level to the apex of a building, were one of the classic ways in the Middle Ages of providing a basic framework for a building, and a means to support its roof.
  • The mountain range's east summit comes next and then the rocky perch that is the 3776 ft summit, the apex of the quartet of ridges.
  • The pitched roof of each shelter was 2.2 m above ground level at its apex and 1.5 m high along the sides and ends.
tip, peak, summit, pinnacle, top, vertex
1.1 Geometry The highest point in a plane or solid figure, relative to a base line or plane.
Example sentences
  • In contrast, Blake demonstrated that a triangle with a proximal apex and distal base is the most effective shape for rowing.
  • It has an uneven shape, being wider at the apex than at the base.
  • Slopes increased from the apex to the base, although the data were more scattered at the base.
1.2 Botany The growing point of a shoot.
Example sentences
  • Excision of the apex releases lateral shoot buds; these were removed and collected as one sample.
  • Shoot apices from three plants were dissected.
  • A shoot apex was considered dead if the terminal bud was absent or if it was dark-brown in colour, dehydrated or damaged.
1.3The highest level of a hierarchy, organization, or other power structure regarded as a triangle or pyramid: the central bank is at the apex of the financial system


[no object] Back to top  
Reach a high point or climax: melodic lines build up to the chorus and it apexes at the solo
More example sentences
  • In Argentina, differentiation on the basis of race starts with a color continuum apexing at ‘White,’ while ‘Black’ constitutes the base of the social pyramid.
  • Montana law, which allowed miners to pursue veins of ore that ‘apexed’ on their claims, regardless of where they led, handed judges enormous power-and enormous opportunity for corruption.
  • The hours and hours and hours of travel finally apexed with a few more hours and hours of travel which led to a couple more hours and hours of travel until I finally arrived in Seattle, the home of ‘really cold rain.’


Early 17th century: from Latin, 'peak, tip'.

  • Apex is Latin for ‘peak, tip’.

Share this entry

There are 2 main definitions of apex in English:

Share this entry
Apex 2 Syllabification: A·pex
Pronunciation: /ˈāpeks/


[usually as modifier]
A system of reduced fares for scheduled airline flights and railroad journeys that must be booked and paid for before a certain period in advance of departure: Apex fares
More example sentences
  • There will be no change on Apex fares for South Wales customers, although there will be a rise of 2.5 per cent elsewhere.
  • Off peak tickets, including Apex, Advance and SuperAdvance, are also going up by an average of three per cent.
  • Fares will remain roughly the same with an Apex return fare at £16 for advance bookings.


1970s: from Advance Purchase Excursion.

Definition of apex in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources

Related Words