1. Of a chemical compound having a ring with five members
   - five-membered

See also: membered

• Carboniferous period
• carbonisation
• carbonise
• carbonization
• carbonize
• apologetics
• apologia
• apologise
• apologist
• apologize
• apologue
• apology
• apolune
• apomict
• apomictic
• apomictical
• apomixis
• apomorphine
• aponeurosis
• aponeurotic
• apopemptic
• apophasis
• apophatic
• apophatism
• apophthegm