The Britannica Dictionary mobile search

×

The Britannica Dictionary

H₂O

1 ENTRIES FOUND:

H₂O

H₂O /ˌeɪtʃˌtuːˈoʊ/

H₂O

/ˌeɪtʃˌtuːˈoʊ/

Britannica Dictionary definition of H₂O

technical

— the chemical symbol for water

two parts H₂O

[+] more examples [-] hide examples [+] Example sentences [-] Hide examples

ASK THE EDITOR

What is the difference between 'distinct' and 'distinctive'?

See the answer »

QUIZZES

Vocabulary Quiz Icon

Vocabulary Quiz

Test your word power

Take the Quiz »

Name That Thing Icon

Name That Thing

Take our visual quiz

Test Your Knowledge »

WORD OF THE DAY

Sectional Illustration

: a type of long seat (called a sofa) that has three or more separate sections (US)

Learn More »