1. Having two centres

See also: central

• Arnold Lucius Gesell
• Arnold of Brescia
• Arnold Palmer
• Arnold Schoenberg
• Arnold Schönberg
• Arnold Toynbee
• Arnold-Chiari deformity
• Arnoseris
• Arnoseris minima
• aroeira blanca
• aroha
• aroid
• aroint
• arolla pine
• aroma
• aromatherapist
• aromatherapy
• aromatic
• aromatic aster
• aromatic compound
• aromatic hydrocarbon
• aromatise
• aromatize
• Arouet
• around