SINCE 1828

An Encyclopædia Britannica Company

on the hour

Definition of on the hour

: at the beginning of the next hour The next train will leave on the hour.

Word by Word Definitions

: a time or office for daily liturgical devotion
: canonical hour
: the 24th part of a day : 60 minutes

See the full definition of hour

Seen and Heard

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

show

WORD OF THE DAY

hebetude

play

lethargy or dullness

Words at Play

a-woman-waits-at-the-end-of-a-gloomy-pier-does-she-wait-for-charon-the-ferryman-to-the-underworld-it-is-dark-but-she-carries-a-parasol

Great Words for Twilight and Darkness

Words for the goth in all of us

bunch-of-yellow-balloons-lit-by-the-sun

Helium: This Word Brought to You by a Solar Eclipse

And by the Sun, with some help from Greek.

watercolor-squares

We're Down With You Being—or Your Being?—a Square

It's about (you? your?) having your say.

Devilish Words

Don't blame a word use error on the devil.

Ask the Editors

video-title-words-of-the-year-1066

Words of the Year: 1066

Or, Why Pig Meat is Called 'Pork' and Cow Meat is Called 'Beef'

How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

video-irregardless-grammar-peeve-blend-of-the-synonyms-irrespective-and-regardless

Irregardless

It is in fact a real word (but that doesn't mean you should use it).

video-moose-goose-weird-plurals

Weird Plurals

One goose, two geese. One moose, two... moose. What's up with that?

Word Games

time-traveler-quiz-which-word-came-first

Time Traveler Quiz: Which Word Came First?

Which word entered the English language first?

Take the quiz

Name More Food!

Test your knowledge of food vocabulary!

Take the quiz

Spell It

Can you spell these 10 commonly misspelled words?

Take the quiz

Citation

Do you know the person or title these quotes describe?

Play the game