CARBONIZE
carbonize, carbonise
(verb) turn into carbon, as by burning; “carbonize coal”
carbonize, carbonise, carburize, carburise
(verb) unite with carbon; “carburize metal”
Source: WordNet® 3.1
Etymology
Verb
carbonize (third-person singular simple present carbonizes, present participle carbonizing, simple past and past participle carbonized)
To turn something to carbon, especially by heating it; to scorch or blacken.
(chemistry) To react something with carbon.
Source: Wiktionary
Car"bon*ize, v. t. [imp. & p. p. Carbonized; p. pr. & vb. n.
Carbonizing.] Etym: [Cf. F. carboniser.]
1. To cover (an animal or vegatable substance) into a residue of
carbon by the action of fire or some corrosive agent; to char.
2. To impregnate or combine with carbon, as in making steel by
cementation.
Source: Webster’s Unabridged Dictionary 1913 Edition