1. Pertaining to, containing, or composed of, carbon.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• arboraceious,
• arboraceoius,
• arboraceus,
• arboaraceous,
• xarbonaceous,
• varbonaceous,
• farbonaceous,
• darbonaceous,
• czrbonaceous,
• csrbonaceous,
• cwrbonaceous,
• cqrbonaceous,
• caebonaceous,
• cadbonaceous,
• cafbonaceous,
• carbinaceous,
• carbomaceous,
• carbonaceious,
• carbonaceoues,
• carbonaceus

• carbonate,
• carbonation,
• carbonise,
• carbondale,
• carbuncle,
• carbonous,
• carbon nanotube,
• carbon steel,
• carbonado,
• carboniferous,
• carbonated,
• carbonara,
• carbonize,
• carbuncled,
• carbon cycle,
• carbon process,
• Carbonneau,
• carbon black,
• Carbonaro,
• carbon copy,
• carbonylic,
• charbonneau,
• carbon atom,
• carbon arc,
• carpinaceae.

The adjective form of the word "carbonaceous" is "carbonaceous" itself.

The plural form of the word "carbonaceous" is "carbonaceous." The word does not have a distinct plural form, and it remains the same in both singular and plural usage.

The singular form of the word "carbonaceous" is "carbonaceou".