bentonite

noun

ben·​ton·​ite ˈben-tə-ˌnīt 

: an absorptive and colloidal clay used especially as a sealing agent or suspending agent (as of drugs)

bentonitic

ˌben-tə-ˈni-tik 

adjective

Examples of bentonite in a Sentence

Recent Examples on the Web

Kaolin and bentonite team up with colloidal clay to soak up excess sebum and sweep away pore-clogging buildup, while corn mint powder lends a little extra oil-absorbing power. — Christa Joanna Lee, Allure, 20 Aug. 2026

Workers line each deposition hole with compressed bentonite clay blocks before inserting the copper containers. — Aman Tripathi, Interesting Engineering, 5 Aug. 2026

Long before tourism, Milos made its fortune from rich deposits of bentonite, perlite, and other minerals. — Rachel Howard, Travel + Leisure, 7 May 2026

At its core is volcanic-ash bentonite clay, an ingredient rich in minerals including calcium, magnesium, and silica. — Justin Fenner, Robb Report, 16 Feb. 2026

Word History

Etymology

Fort Benton, Montana

First Known Use

1898, in the meaning defined above

Rhymes for bentonite

• acolyte
• aconite
• allanite
• alunite
• amberlite
• ammonite
• amorite
• amphitrite
• analyte
• anchorite
• andesite
• anhydrite

Kids Definition

bentonite

noun

ben·​ton·​ite ˈbent-ᵊn-ˌīt 

: an absorbent clay

Medical Definition

bentonite

noun

ben·​ton·​ite ˈbent-ᵊn-ˌīt 

: an absorptive and colloidal clay used in pharmacy especially to stabilize suspensions

bentonitic

ˌbent-ᵊn-ˈit-ik 

adjective