: 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
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Three parts potting soil mixed with two parts perlite will provide good drainage.
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Kim Toscano, Southern Living, 26 Oct. 2024
Impatiens, geranium, coleus, and begonias root easily in water, damp perlite, or seed starting mix, says Hancock.
—Erica Browne Grivas, Better Homes & Gardens, 30 Sep. 2024
Media with perlite, sand, or other materials to improve drainage are ideal.
—Kim Toscano, Southern Living, 14 Sep. 2024
Seeds: Prepare a seed flat or several small pots with a peat moss and perlite mix.
—Viveka Neveln, Better Homes & Gardens, 8 May 2024
See all Example Sentences for perlite 
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Kim Toscano, Southern Living, 26 Oct. 2024
Impatiens, geranium, coleus, and begonias root easily in water, damp perlite, or seed starting mix, says Hancock.
—Erica Browne Grivas, Better Homes & Gardens, 30 Sep. 2024
Media with perlite, sand, or other materials to improve drainage are ideal.
—Kim Toscano, Southern Living, 14 Sep. 2024
Seeds: Prepare a seed flat or several small pots with a peat moss and perlite mix.
—Viveka Neveln, Better Homes & Gardens, 8 May 2024
See all Example Sentences for perlite
Dictionary Entries Near perlite
Cite this Entry
“Perlite.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/perlite. Accessed 22 Nov. 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)
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