pentadecane

from The Century Dictionary.

• noun A hydrocarbon, C₁₅H₃₂, of the paraffin series. Normal pentadecane melts at 10° C., yielding an oily liquid which boils at 270.5° C. It is made synthetically.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Chem.) A hydrocarbon of the paraffin series, (C15H32) found in petroleum, tar oil, etc., and obtained as a colorless liquid; -- so called from the fifteen carbon atoms in the molecule.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun organic chemistry Any of very many isomeric saturated aliphatic hydrocarbons having fifteen carbon atoms; but especially n-pentadecane, CH3(CH2)13CH3