known

[nohn]

verb

1. past participle of know.

noun

1. a known quantity.

known

/ nəʊn /

verb

1. the past participle of know

adjective

1. specified and identified

   a known criminal

noun

1. a fact or entity known

Word History and Origins

Origin of known¹

First recorded in 1300–50, for the adjective

Example Sentences

Vitamin K, a fat-soluble nutrient best known for its role in blood clotting and bone health, has recently attracted attention for its influence on brain cell development and protection.

Read more on Science Daily

Libby Jones, General Manager for Overseas Health and Safety at TUI, explained the company audits the compliance of hotels against safety standards in what's known as the "blue book".

Read more on BBC

The same day, thousands watched a giant screen in a public plaza in Tel Aviv that has become known as Hostages Square.

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Autism has a strong genetic component, scientists say, and some known risk factors such as older parental age might have contributed to the increase.

Read more on The Wall Street Journal

There had been months of political debate, strikes and street protests, and in the end the bill had to go through without a vote in parliament using a constitutional mechanism known as 49:3.

Read more on BBC

Related Words

• accepted 
• acknowledged 
• admitted 
• common 
• established 
• familiar 
• noted 
• notorious 
• obvious 
• recognized www.thesaurus.com
• well-known