
1) Carbonic 2) Carboniferous 3) Carbonous 4) Chemical element 5) Element
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https://www.crosswordclues.com/clue/carbonaceous

1) Carbonic 2) Carbonous
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https://www.crosswordclues.com/clue/carbonaceous

Carbonaceous refers to something relating to, containing, or composed of carbon. It is a named used for the attribute of any substance rich in carbon. Particularly, carbonaceous hydrocarbons are very unsaturated, high-molecular-weight hydrocarbons, having an elevated carbon:hydrogen ratio. The carbonaceous chondrites are meteorites that are rich i...
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http://en.wikipedia.org/wiki/Carbonaceous

• (a.) Pertaining to, containing, or composed of, carbon.
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http://thinkexist.com/dictionary/meaning/carbonaceous/
Car'bo·na`ceous adjective Pertaining to, containing, or composed of, carbon.
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http://www.encyclo.co.uk/webster/C/23

Containing carbon.
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http://www.evcforum.net/WebPages/Glossary_Geology.html

Carbonaceous refers to composed chiefly of organic carbon. (i.e. carbon derived from plant and animal remains.)
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http://www.probertencyclopaedia.com/browse/HC.HTM

[
adj] - relating to or consisting of or yielding carbon
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http://www.webdictionary.co.uk/definition.php?query=carbonaceous

carbonaceous Pertaining to, containing, or composed of, carbon; like coal.
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http://www.wordinfo.info/words/index/info/view_unit/376/

containing a noteworthy part of so-to-speak amorphous carbon and/or some solid organic hydrocarbon(s); so-designated rocks are commonly black or dark gray.
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https://www.encyclo.co.uk/local/20132
carbonous adjective relating to or consisting of or yielding carbon
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https://www.encyclo.co.uk/local/20974

A rock or sediment that is rich in carbon.
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https://www.encyclo.co.uk/local/23001
No exact match found.