[ 'ɪgnɪmbrʌɪt ]
■ noun Geology a volcanic rock formed by the consolidation of material deposited by pyroclastic flows.
Origin
1930s: from L. ignis 'fire' + imber , imbr- 'shower of rain, storm cloud' + -ite 1 .
[ 'ɪgnɪmbrʌɪt ]
■ noun Geology a volcanic rock formed by the consolidation of material deposited by pyroclastic flows.
Origin
1930s: from L. ignis 'fire' + imber , imbr- 'shower of rain, storm cloud' + -ite 1 .
Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004