burnup burntweed • burn up · · · Info · Definitions · Characters · · burnup · · Text Latin · · Script 6 · · Length 2 · · Syllables Definitions · · · (noun) a high-speed motorcycle race on a public road. · · Noun Definition 1 (noun) the amount of fuel used up (as in a nuclear reactor). · · Noun Definition 2 Characters · · b latin small letter b U+0062 n latin small letter n U+006E p latin small letter p U+0070 r latin small letter r U+0072 u latin small letter u U+0075