calculus

A noun with multiple meanings: a hard mineral concretion found in body organs or ducts; a dental deposit on teeth and gums; or a branch of mathematics dealing with limits, differentiation, and integration of functions.

• 🇨🇳名词，有多个含义：体内器官或管道中形成的坚硬矿物沉积物（结石）；牙齿和牙龈上的牙垢；以及研究极限、微分和积分的数学分支（微积分）。

1. Hard mineral deposit in the body C1 formal medical

   A solid concretion of mineral salts that forms in hollow organs or ducts, such as the kidneys or gallbladder.

   • The patient was diagnosed with a renal calculus causing severe pain.
   • Gallstones are a common type of calculus found in the gallbladder.
   • Surgery was required to remove the calculus from the bile duct.

   🇨🇳结石

   同义词: concretionstone

2. Dental deposit B2 formal medical

   A hardened deposit of plaque that forms on teeth and gums, also known as tartar.

   • Regular brushing helps prevent the formation of dental calculus.
   • The dentist removed the calculus buildup during the cleaning.
   • Calculus on the teeth can lead to gum disease if not treated.

   🇨🇳牙结石

   同义词: tartar

3. Branch of mathematics B2 formal scientific

   The mathematical study of continuous change, involving limits, derivatives, integrals, and infinite series.

   • Calculus is essential for understanding physics and engineering concepts.
   • She took a course in differential calculus last semester.
   • The integral calculus helps calculate areas under curves.

   🇨🇳微积分

   同义词: infinitesimal calculus

• calculi plural form
• calculuses plural form
• calculi's possessive plural form
• calculuses' possessive plural form
• calculus's possessive singular form