heating oil heatingly • heating pad · · · Info · Definitions · Synonyms · Characters · · heating oil · · Text Common · · Latin · · Scripts 11 · · Length 3 · · Syllables Definitions · · · (noun) a petroleum product used for fuel. Synonyms: fuel oil, heating oil. · · Noun Definition 1 Synonyms · · · fuel oil · · Synonym 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 l latin small letter l U+006C n latin small letter n U+006E o latin small letter o U+006F t latin small letter t U+0074