SINCE 1828

An Encyclopædia Britannica Company

water bear

noun

Definition of water bear

: tardigrade

First Known Use of water bear

1848

Learn More about water bear

See words that rhyme with water bear Britannica.com: Encyclopedia article about water bear

Seen and Heard

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

show

WORD OF THE DAY

tristful

play

sad or melancholy

Words at Play

alt-5953d7f904965

'Patriot' Hasn't Always Been Positive

The word has roots in a religious rivalry

alt-5949565fc7d94

'Negging' Moves Beyond The Bar

Not just for pick-up artists anymore

alt-5947fc40f1b5c

In Tech, What Does 'K' Mean?

A buzzword with a long history.

alt-5951697e1a410

When To Use 'Specious' vs. 'Spurious'

These similar words are not interchangeable

Ask the Editors

How Often Is 'Biweekly'?

Don't get us started on 'bimonthly'

Is it wrong to use 'decimate' to mean 'destroy'?

Language changes

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

istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us

June 2017 Words of the Day Quiz

Summer's first WOTD quiz.

Take the quiz

alt-5941ad7527c3c

Yearbook Superlatives Quiz

Is that your picture under "Largest Vocabulary"?

Take the quiz

True or False?

Test your knowledge - and maybe learn something along the way.

Take the quiz

Word Winder's CrossWinder

Word Winder's CrossWinder

A game of winding words.

Play the game