PERLITE


Meaning of PERLITE in English

[ 'pə:lʌɪt ]

■ noun a form of obsidian consisting of glassy globules, used as thermal insulation or in plant growth media.

Origin

C19: from Fr., from perle 'pearl'.

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.