1. Plural of fulcrum; the points or supports on which a lever turns or is supported.
Usage: Technical/mechanical term; Most commonly used in physics and engineering contexts
2. Plural of fulcrum; central or crucial points on which something depends or turns.
Usage: Figurative use

Examples

• The fulcra of the bridge's support system were carefully engineered to distribute weight evenly.
• In physics class, we learned how fulcra work in simple machines like seesaws.
• The fulcra of their argument rested on three key pieces of evidence.
• Engineers identified the fulcra that would allow the crane to lift the heavy load safely.
• The fulcra of the organization's success were its dedicated employees and strong leadership.
• By adjusting the fulcra, the lever became more efficient at moving the object.