apex
/ˈeɪpɛks/
noun
- The highest point or top of something.
- At the apex of the roof, a small weather vane spun in the wind.
- The apex of the pyramid is a single stone block.
- The hikers finally reached the apex of the mountain.
- The most successful or powerful part of something; the peak.
- She was at the apex of her career when she won the award.
- The company reached its apex in the 1990s.
- Historians consider that era the apex of the empire's influence.
- The tip or pointed end of a structure, such as a leaf or organ.
- The leaf's apex is sharply pointed.
- The surgeon carefully worked near the apex of the lung.
- Botanists measure the angle at the apex of the leaf.