1. Plural of apex; the highest points or peaks of something.
Usage: Most common plural form in general usage
2. In anatomy and botany, plural of apex; the pointed tips of structures such as teeth, leaves, or organs.
Usage: technical; scientific

Examples

• The apices of the mountains were covered in snow.
• The climbers reached the apices of three peaks during their expedition.
• The dentist examined the apices of the patient's teeth.
• The apices of the leaves pointed upward toward the sun.
• These buildings represent the apices of modern architecture.
• The apices of the triangles met at a single point.