___ World Tour (sports circuit)

• Molecule that carries energy: Abbr
• Nucleotide used in energy transfer: Abbr
• Mitochondrion-made material, briefly
• Sports org. supported by 66-Down
• Energy storage molecule, briefly
• Tennis tour letters
• Need for muscle contraction, briefly
• Rackets and brackets org
• Court sport org.

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
abbreviation of adenosine triphosphate , attested from 1939.