Vermiculite is a naturally occurring mineral that expands when heated, resulting in a lightweight, fire-resistant material. This expansion process creates small, worm-like particles, hence the name "vermiculite," derived from the Latin word "vermiculare," meaning "to breed worms." It is commonly used in horticulture for soil amendment, as well as in insulation, packaging, and various construction applications due to its excellent thermal and acoustic properties. Additionally, vermiculite can retain moisture and nutrients, making it beneficial for plant growth.