1. Containing a closed ring of atoms of the same kind especially carbon atoms
   - homocyclic

See also: cyclic

• genus Calamintha
• genus Calamus
• genus Calandrinia
• genus Calanthe
• genus Calceolaria
• genus Calendula
• genus Calidris
• genus Calla
• genus Calliandra
• genus Callicebus
• genus Callimorpha
• loment
• Lomogramma
• Lomotil
• lomustine
• Lomé
• Lonas
• Lonas annua
• Lonas inodora
• Lonchocarpus
• London
• London plane
• Londoner
• lone
• lone hand