perlite

noun
per·​lite | \ ˈpər-ˌlīt How to pronounce perlite (audio) \

Definition of perlite

: volcanic glass that has a concentric structure, appears as if composed of concretions, is usually grayish and sometimes spherulitic, and when heated expands to form a lightweight aggregate used especially in concrete and plaster and as a medium for potting plants

Keep scrolling for more

Other Words from perlite

perlitic \ ˌpər-​ˈli-​tik How to pronounce perlite (audio) \ adjective

Examples of perlite in a Sentence

Recent Examples on the Web They are made from Portland cement, perlite (or vermiculite) and water. Linda Gandee, cleveland, 6 Sep. 2021 Pumice or perlite — Quarried lava rock increases drainage and space for roots to grow. Claire Reid, Los Angeles Times, 10 Aug. 2021 Pumice or perlite — Quarried lava rock increases drainage and space for roots to grow. Claire Reid, Los Angeles Times, 10 Aug. 2021 Pot them in a mixture of ½ peat moss and ½ sand or 2 parts peat moss to 1 part perlite. Sunset Magazine, 16 Oct. 2020 Pumice or perlite — Quarried lava rock increases drainage and space for roots to grow. Claire Reid, Los Angeles Times, 10 Aug. 2021 Look for a potting mix that’s peat-based with 50 percent perlite. Arricca Elin Sansone, Country Living, 20 July 2021 Keep them happy: Grow monkey cups in 3 parts sphagnum moss to one part of a course material, such as perlite, orchid bark, pumice, or lava rock. Sunset Magazine, 16 Oct. 2020 Pumice or perlite — Quarried lava rock increases drainage and space for roots to grow. Claire Reid, Los Angeles Times, 3 Aug. 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'perlite.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of perlite

1833, in the meaning defined above

History and Etymology for perlite

French, from perle pearl

Keep scrolling for more

Learn More About perlite

Time Traveler for perlite

Time Traveler

The first known use of perlite was in 1833

See more words from the same year

Dictionary Entries Near perlite

Perlis

perlite

Perlman

See More Nearby Entries 

Statistics for perlite

Last Updated

14 Sep 2021

Cite this Entry

“Perlite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/perlite. Accessed 16 Sep. 2021.

Style: MLA
MLACheck Mark Icon ChicagoCheck Mark Icon APACheck Mark Icon Merriam-WebsterCheck Mark Icon

More from Merriam-Webster on perlite

Britannica.com: Encyclopedia article about perlite

WORD OF THE DAY

Test Your Vocabulary

Difficult Spelling Words Quiz

  • alphabet pasta spelling help
  • Which is the correct spelling?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Universal Daily Crossword

A daily challenge for crossword fanatics.

TAKE THE QUIZ
Love words? Need even more definitions?

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