Merriam-Webster Logo
SINCE 1828
Menu
×

An Encyclopædia Britannica Company

borosilicate glass

noun

Definition of borosilicate glass

  1. :  a silicate glass that is composed of at least five percent oxide of boron and is used especially in heat-resistant glassware

From the M-W Editors

istock-refers-to-this-as-a-tumble-of-strawberries-which-sounded-pretty-nice-to-us
June 2017 Words of the Day Quiz
decimate-video
Is it wrong to use 'decimate' to mean 'destroy'?
alt-594d2b6325245
'Pride': The Word That Went From Vice to Strength
image599301899
Pretty in 'Pink'

1907

First Known Use of borosilicate glass

1907

Learn More about borosilicate glass

  1. Britannica.com: Encyclopedia article about borosilicate glass

Seen and Heard

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

show hide

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

WORD OF THE DAY

argy-bargy

play

a lively discussion

Get Word of the Day daily email!

TRENDING NOW

  1. surrogate mother From TMZ to the dictionary.

  2. zealot A fanatical partisan

  3. stonewall to be uncooperative, obstructive, or evasive

  4. scurrilous Containing obscenities, abuse, or slander

  5. depose That word might not mean what you think it means.

SEE ALL

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play

alt-594d2b6325245
'Pride': The Word That Went From Vice to Strength

Do you take pride in Pride?

image599301899
Pink: The Color that Will Change Your Life

From Fuchsia to Baker-Miller Pink

image2144101468
That Sucks Word Alternatives

Your day is the worst. Your vocabulary is the best.

alt-5931949575ca5
'All the Feels,' All the Time

Once more, with 'feels'

Ask the Editors

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

Language changes

serial-comma
The Serial Comma

Why don't they call it the Merriam-Webster comma?

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
Spell It
Spell It

Can you spell these 10 commonly misspelled words?

Take the quiz
Add Diction
Add Diction

Build a chain of words by adding one letter at a time.

Play the game