apex
UK: ˈeɪ.peks | US: ˈeɪ.peks
n. the highest point or peak of something
n. (biology) the tip of a structure, such as a leaf or root
n. (astronomy) the highest point in the trajectory of a celestial body
The word "apex" comes directly from Latin apex, meaning "summit" or "tip." In ancient Rome, it referred to the pointed cap worn by priests or the peak of a mountain. Over time, it broadened to denote the highest point of anything, retaining its core idea of sharpness or elevation. The Latin root is monomorphic, so it is not split further.
The climbers reached the apex of the mountain at dawn.
The apex of the pyramid is perfectly aligned with the stars.
In botany, the apex of a plant often shows the most rapid growth.
The eagle soared to the apex of the sky before diving.
His career hit its apex when he won the Nobel Prize.