6-membered
1. [ adjective ] of a chemical compound having a ring with six members
Synonyms: six-membered
Examples:

"having three carbon and three nitrogen atoms in a six-membered ring"

Related terms: membered
Similar spelling:   9-membered
  8-membered
  7-membered
  5-membered
  4-membered
  3-membered
  membered
  membrane
  memberless