IPA: /vɜːrˈmɪkjʊlaɪt/
KK: /vɜrˈmɪkjʊˌlaɪt/
A type of mineral that expands when heated, often used for insulation and as a growing medium for plants.
Vermiculite is commonly added to potting soil to improve aeration and moisture retention.
Vermiculite is derived from the Latin word "vermiculus" (meaning little worm) and the suffix "-ite" (used to denote minerals or rocks). The term vermiculite refers to a mineral that expands when heated, resembling the shape of a small worm, hence the connection to its name.
Imagine a little 'worm' ('vermiculus') that expands and curls up when heated, which helps you remember that vermiculite is a mineral that expands.