What is the meaning of Phenylene?

(n.) A hypothetic radical (C6H4) occurring in certain derivatives of benzene; as, phenylene diamine.
Webster's Revised Unabridged Dictionary
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APAWebster's. (2011). phenylene. Retrieved September 23, 2026, from http://smartdefine.org/phenylene/definitions/2044678
ChicagoWebster's. 2011. "phenylene" http://smartdefine.org/phenylene/definitions/2044678 (accessed September 23, 2026).
HarvardWebster's 2011, phenylene, Smart Define, viewed 23 September, 2026, <http://smartdefine.org/phenylene/definitions/2044678>.
MLAWebster's. "phenylene" 27 May 2011. Web. 23 September 2026. <http://smartdefine.org/phenylene/definitions/2044678>