(organic chemistry, uncountable) The simplest aliphatic hydrocarbon, CH₄, being a constituent of natural gas, and one of the most abundant greenhouse gases.

(organic chemistry) Derivatives of methane. plural of methane

(organic chemistry) The IUPAC name for formaldehyde, rarely used in research or industry.

plural of methanal

(organic chemistry) The reaction of hydrogen and carbon monoxide to form methane

plural of methanation

anaerobic digestion to produce methane from waste material

A device that hydrogenates carbon monoxide and carbon dioxide to produce methane

Relating to, or producing methane

A gas hydrate that contains methane as the guest molecule; It occurs both in deep sedimentary structures, and as outcrops on the ocean floor.