(organic chemistry, uncountable) An aliphatic hydrocarbon, C₂H₆, gaseous at normal temperatures and pressures, being a constituent of natural gas.

(zoology) The scientific study of human and animal behaviour. / (obsolete) The study of the human ethos.

(rare) Ethnic. / Of or relating to ethnology.

(anthropology) The branch of anthropology that studies and compares the different human cultures.

A male given name from Hebrew, of mostly American usage since the 18th century; popular in the 2000s. / A town in South Dakota, United States.

The character or fundamental values of a person, people, culture, or movement.

(organic chemistry) A simple aliphatic alcohol formally derived from ethane by replacing one hydrogen atom with a hydroxyl group: CH₃-CH₂-OH. / Specifically, this alcohol as a fuel.

The tendency to look at the world primarily from the perspective of one's own traditional, deferred, or adoptive ethnic culture.

(organic chemistry) The common name for the organic chemical compound ethene. The simplest alkene, a colorless gaseous (at room temperature and pressure) hydrocarbon with the chemical formula C₂H₄.

(organic chemistry, dated) ethanol, a type of alcohol.