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pyroschist
pyroschist n.
Brit. 
/ˈpʌɪrə(ʊ)ʃɪst/
, /ˈpʌɪrə(ʊ)ʃɪst/U.S. /ˈpaɪrəˌʃɪst/
Geology (now rare) a schist or shale with a high carbon content, which burns or yields volatile hydrocarbons or flammable gas when heated./ˈpaɪrəˌʃɪst/ΚΠ
1861 T. S. Hunt in Canad. Naturalist & Geologist 6 242 These inflammable or lignitic shales, which may be conveniently distinguished by the name of pyroschists, (the brandschiefer of the Germans) are to be carefully distinguished from rocks containing ready-formed bitumen.
1920 A. W. Grabau Textbk. Geol. xviii. 580 Shales... When extremely rich in carbonaceous material they are called pyroschists.
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as lemmas
- poison-maker
- poison-monger
- poison-nut
- poison-proof
- poison-secretor
- poison-shooting
- poison-sprinkled
- poison-swallower
- poison-tainted
- poison-taking
- poison-thread
- poison-tipped
- poison-toothed
- poison-weed
- poison-withe
- poisonable
- poisonal
- poisonbarbed
- poisonbearing
- poisonbreathing
- poisonbush
- poisoncart
- poisondipped
- poisoneater
- poisoned