apex

/ˈeɪˌpɛks/B2Loopy word list, level 5 · Proficient

Definition

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

Word forms

Plural: apices

Example sentences

n.
Reaching the apex of the mountain was a thrilling experience.
n.
The doctor examined the apex of the patient's heart during the check-up.