1. Plural of calculus; hard deposits of mineral salts that form in the body, especially in the kidneys, bladder, or gallbladder.
Usage: medical term; often used in clinical contexts
2. Plural of calculus; a system of calculation or computation using symbols.
Usage: mathematics; formal/technical

Examples

• The patient was diagnosed with kidney calculi that required surgical removal.
• Doctors discovered gallbladder calculi during the ultrasound examination.
• The formation of calculi can cause severe pain and urinary complications.
• In mathematics, different calculi are used to solve complex problems.
• The calculi in his urinary tract were treated with medication and hydration therapy.