51Թ

Advertisement

Advertisement

rock wool

rock wool

noun

  1. another name for mineral wool
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Discover More

51Թ History and Origins

Origin of rock wool1

First recorded in 1925–30
Discover More

Example Sentences

Examples have not been reviewed.

He has spent £4,000 on reports that suggest a mix of rock wool and polystyrene insulation - and a botched removal - have caused persistent damp.

From

Plants are grown in containers filled with an organic hydroponic growing medium called rock wool.

From

Originally planted in coconut fiber, which proved too acidic over time, it was replanted in inert rock wool with fresh plants.

From

But the season can last year-round with indoor hydroponics, which uses water and nutrients to grow vertically stacked plants rooted in a binding material such as rock wool.

From

Framed snugly between rock wool insulation and a comprehensive row of dumbbells, the blue pinups take the shape of the state of Maryland and reflect the current state of Good Counsel wrestling.

From

Advertisement

Advertisement

Advertisement

Advertisement