(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

Relating to, or producing methane

anaerobic digestion to produce methane from waste material

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

Rain, in the form of liquid methane rather than water, that falls on Saturn's moon Titan and creates equivalent geographical features (rivers, lakes etc.) as does normal rain.