(n.) A hydrocarbon radical, CH2, not known in the free state, but regarded as an essential residue and component of certain derivatives of methane; as, methylene bromide, CH2Br2; -- formerly called also methene.
Webster's Revised Unabridged Dictionary
| APA | Webster's. (2011). methylene. Retrieved September 23, 2026, from http://smartdefine.org/methylene/definitions/2032392 |
| Chicago | Webster's. 2011. "methylene" http://smartdefine.org/methylene/definitions/2032392 (accessed September 23, 2026). |
| Harvard | Webster's 2011, methylene, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/methylene/definitions/2032392>. |
| MLA | Webster's. "methylene" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/methylene/definitions/2032392> |