of Meaning in Cambridge American English Dictionary
Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

Meaning of "of" - American English Dictionary

See all translations

ofpreposition

 us   /ʌv, ɑv, əv/

of preposition (POSSESSION)

used to show possession, belonging, or origin: She is a friend of mine. The color of his tie matches his suit. Have you read the novels of John Updike?

of preposition (CONTAINING)

containing or consisting of: a bag of groceries a book of short stories a forest of pine trees a bunch of grapes

of preposition (AMOUNT)

used after words or phrases expressing amount, number, or a particular unit: a drop of rain two pounds of potatoes hundreds of people

of preposition (POSITION)

used in expressions showing position: I left the book on top of my desk. I’ve never been north of Montreal.

of preposition (RESULT)

resulting from or having to do with: the joy of family the fear of failure

of preposition (RELATING TO)

about, or relating to: Speaking of Elizabeth, here she is. There’s a chapter on the use of herbs for medicinal purposes.

of preposition (CAUSED BY)

used to show the cause of something: He died of a heart attack. Penny is frightened of spiders. I’m tired of all this criticism.

of preposition (THAT IS/ARE)

that is/are: Sales tax of 7% is included in the price. She could read by the age of five.

of preposition (COMPARING)

used when comparing related things: He’s the oldest of three brothers. Of all his films, this one is my favorite.

of preposition (DONE TO)

done to or involving: the destruction of the rain forests the graduation of the class of 2001

of preposition (DISTANCE FROM)

used in expressions showing distance from something in place or time: We live within a mile of the school. She came within two seconds of beating the world record.

of preposition (TIME)

used in saying what the time is: It’s ten (minutes) of five (= ten minutes before five o’clock).

of preposition (DAYS)

used to describe a particular day: the eleventh of March the first of the month
(Definition of of from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of of?
Add Cambridge dictionaries to your browser to your website

Definitions of “of” in other dictionaries

Word of the Day
child benefit

money received regularly by families from the government to help pay for the costs of taking care of children

Word of the Day

Are you a glass-half-full person? (Everyday Idioms)
Are you a glass-half-full person? (Everyday Idioms)
by Kate Woodford,
July 29, 2015
A reader of this blog recently asked for a post on idioms that are used in everyday English. This seemed like a reasonable request. After all, if you are going to make the effort to learn a set of English idioms, you want those idioms to be useful. The question, then, was

Read More 

responsible luxury noun
responsible luxury noun
August 03, 2015
high-end, green tourism and hospitality Jumeirah’s ‘responsible luxury’ approach is an example of a sustainable travel experience – future guests will enjoy the environment as much as today’s.

Read More