apex

1. 1.

   the highest point (of something)

   “at the peak of the pyramid”

   Synonymsvertexpeakacme

   Broaderextreme point

   Narrowercrownroof peak
2. 2.

   the point on the celestial sphere toward which the sun and solar system appear to be moving relative to the fixed stars

   Synonymssolar apexapex of the sun's way

   Antonymsantapex

   Broadercelestial point

   Part ofcelestial sphere

Other forms of apex

plural

apices

Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.

Questions about apex

What does apex mean?

apex means "the highest point (of something)". That is the primary sense; the word has 2 in total, listed in full on this page.

How many syllables are in apex?

apex has 2 syllables: a-pex. The stress falls on "a". In IPA it is /ˈeɪˌpɛks/.

What is another word for apex?

Close synonyms include vertex, peak, acme, solar apex, apex of the sun's way. Each sense on this page lists its own synonyms, because a word with several meanings rarely has one substitute that works for all of them.

What is the opposite of apex?

The recorded antonyms are antapex.

Is apex a common word?

apex is banded "Familiar" — widely understood, used when the subject calls for it. The band comes from how often the word appears in a large corpus of everyday English, not from an editor's impression.