# known

Pronunciation: say "NOHN" US /noʊn/, UK /nəʊn/

## Verb

1. Past participle of know. — past participle of know
   - Simple: Past participle of know. Use this form after 'have' (has known) or 'be' (is known).
   - _She has known the truth all along._
   - _This recipe has been known to families here for generations._

## Adjective

2. That people know about or have identified; recognized, familiar or already established ('a known risk'; 'the oldest known example').
   - Simple: That people already know about or have found out.
   - _Scientists compared the new readings against known values from earlier studies._
   - _The treatment relies on known principles of chemistry._

## Noun

3. In general use rather than mathematics, a fact or situation that is already understood or familiar.
   - Simple: A fact or thing that people already understand.
   - _Treat the budget as a known and plan everything else around it._
   - _A solid forecast rests on a few reliable knowns._
4. A constant or variable whose value is already determined.
   - Simple: A number in a math problem whose value you already have.
   - _Each known in the system reduces the number of equations you need._
   - _Rearrange the equation to express the unknown in terms of the knowns._

## Origin

The past participle of "know," from Middle English knowen and Old English cnāwen, formed from "know" plus the ending "-n."

Source: DictionaryAI, https://dictionaryai.com/define/known (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).