Crossword clue: a carbonaceous material obtained by heating wood or other organic matter in the absence of air

The most common answer is charcoal (8 letters).

1 answer found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

Possible answers

charcoal 8 letters wn-def

a carbonaceous material obtained by heating wood or other organic matter in the absence of air