contamination

noun

con·​tam·​i·​na·​tion kən-ˌta-mə-ˈnā-shən 

1

: a process of contaminating : a state of being contaminated

2

: contaminant

Synonyms of contamination

• contaminant
• pollutant

Examples of contamination in a Sentence

swimming in the lake is banned until the contamination is identified and neutralized

Recent Examples on the Web

The combined sewage-overflow tanks that are supposed to divert sewage from running into the canal won’t be complete until 2029 — a seven-year delay that might require parts of the canal to be re-dredged again to remove the contamination. — Kim Velsey, Curbed, 9 Oct. 2026

The study’s authors said that this discovery shows the potential to better remediate synthetic dye chemicals from textile production wastewater to protect vulnerable water supplies from contamination. — Jennifer Bringle, Footwear News, 2 Oct. 2026

Several food products were recalled in September over concerns ranging from possible salmonella and listeria contamination to undeclared allergens, foreign materials and other potential hazards. — Sacbee.com, 2 Oct. 2026

Heavy metals occur naturally in soil, water and air, but agricultural, industrial and mining pollution can increase and spread contamination. — Sandee Lamotte, CNN Money, 2 Oct. 2026

Word History

Etymology

Middle English contaminacioun, borrowed from Latin contāminātiōn-, contāminātiō "defilement, pollution," from contāmināre "to defile, pollute" + -tiōn-, -tiō, suffix of verbal action — more at contaminate

First Known Use

15th century, in the meaning defined at sense 1

Phrases Containing contamination

• cross contamination
• self-contamination

Rhymes for contamination

• abbreviation
• abomination
• acceleration
• accentuation
• accommodation
• accreditation
• acculturation
• accumulation
• acetylation
• adjudication
• administration
• adulteration

Medical Definition

contamination

noun

con·​tam·​i·​na·​tion kən-ˌtam-ə-ˈnā-shən 

1

: a process of contaminating : a state of being contaminated

2

: something that contaminates