Word Games
Word of the Day
New Words & Slang
Video
My Favorites
View your list of saved words.
(You can log in using Facebook.)

hi-fi

hi–fi

noun \ˈhī-ˈfī\

Definition of HI-FI

: high fidelity

: equipment for reproduction of sound with high fidelity

See hi–fi defined for English-language learners »

See hi-fi defined for kids »

First Known Use of HI-FI

1950

Browse

Next Word in the Dictionary: hi–flash
Previous Word in the Dictionary: hifalutin
All Words Near: hi-fi

Seen & Heard

What made you want to look up hi-fi? Please tell us where you read or heard it (including the quote, if possible).

View Seen & Heard highlights from around the site »

Merriam-Webster on Facebook

Test Your Vocabulary

Take Our 10-Question Quiz


	Name That Thing Take our visual vocab quiz Test Your Knowledge »

	True or False? A quick quiz about stuff worth knowing Take It Now »


	Join Us on FB & Twitter Get the Word of the Day and More Facebook \| Twitter

	Get Our Free Apps Voice Search, Favorites, Word of the Day, and More iPhone \| iPad \| Android \| More

hi-fi

hi–fi

Definition of HI-FI

First Known Use of HI-FI

Browse

Seen & Heard

Test Your Vocabulary

The Merriam-Webster

Unabridged Dictionary

Learning English?

We can help.

Our Dictionary,
On Your Devices

Visit Our Store

Join Us

Bookstore: Digital and Print

Other Merriam-Webster Dictionaries

hi-fi

hi–fi

Definition of HI-FI

First Known Use of HI-FI

Browse

Seen & Heard

Test Your Vocabulary

Name That Thing

True or False?

Join Us on FB & Twitter

Get Our Free Apps

The Merriam-Webster

Unabridged Dictionary

Learning English?

We can help.

Our Dictionary,On Your Devices

Visit Our Store

Join Us

Bookstore: Digital and Print

Other Merriam-Webster Dictionaries

Our Dictionary,
On Your Devices