1. The plural of fastigium; the highest point or peak of something, especially a roof or architectural structure.
Usage: formal; architecture
2. In biology, the highest point in the course of a disease or fever.
Usage: medical; technical

Examples

• The fastigiums of the cathedral's twin spires were visible from miles away.
• The architect designed multiple fastigiums to create visual interest along the roofline.
• During the fever's fastigiums, the patient's temperature reached its highest levels.
• The building's fastigiums were decorated with ornamental finials.
• The disease progressed through several fastigiums before the patient began to recover.