: 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
Examples of perlite in a Sentence
Recent Examples on the Web
Insert the cut ends an inch or two deep into shallow containers filled with coarse vermiculite, perlite or a loose potting soil.
—
Tom MacCubbin, Orlando Sentinel, 15 June 2024
Insert the end into a small pot filled with a peat moss and perlite mix, and place it indoors in bright indirect light.
—Viveka Neveln, Better Homes & Gardens, 8 May 2024
Add a layer of rocks or perlite to the bottom to aid drainage.
—Steve Bender, Southern Living, 7 May 2024
Made with a blend of sphagnum peat moss, humus, and perlite, this potting mix helps ensure good drainage to keep roots healthy.
—Renee Freemon Mulvihill, Better Homes & Gardens, 2 May 2024
See all Example Sentences for perlite 
Tom MacCubbin, Orlando Sentinel, 15 June 2024
Insert the end into a small pot filled with a peat moss and perlite mix, and place it indoors in bright indirect light.
—Viveka Neveln, Better Homes & Gardens, 8 May 2024
Add a layer of rocks or perlite to the bottom to aid drainage.
—Steve Bender, Southern Living, 7 May 2024
Made with a blend of sphagnum peat moss, humus, and perlite, this potting mix helps ensure good drainage to keep roots healthy.
—Renee Freemon Mulvihill, Better Homes & Gardens, 2 May 2024
See all Example Sentences for perlite
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'perlite.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near perlite
Cite this Entry
“Perlite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/perlite. Accessed 15 Jul. 2024.
Copy CitationKids Definition
perlite
noun
per·lite
ˈpər-ˌlīt 
: a glassy mineral of volcanic origin that when expanded by heat forms a lightweight material capable of absorbing liquids (as water)
Love words? Need even more definitions?
Merriam-Webster unabridged
Share