English · Daily Life
about
/əˈbaʊt/
[/əˈbaʊt/]
on the subject of; approximately
Beginnerpreposition
Definition
Used to show what something concerns, or to mean roughly or nearly a number.
Example
This book is about space.
This book is about space.
Etymology
From Old English 'onbutan', meaning 'on the outside of'.
How & Where It’s Used
Very common in speech for topics and for estimating amounts.