decene

from The Century Dictionary.

• noun A hydrocarbon, C₁₀H₂₀, belonging to the ethylene series. It is an oily liquid which boils at 172° C.

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

• noun (Chem.) One of the higher hydrocarbons, C10H20, of the ethylene series.

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

• noun organic chemistry Any of many isomeric monoalkenes derived from a decane