Enter a clue or pattern or both:
The Clue
___ World Tour (sports circuit) (3 letter answer)
The Answer
ATP
Tags
Notes
The answer ATP is rarely seen, appearing only about once every 1600 puzzles.
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Need for muscle contraction, briefly
Definition
ATP as a noun:
1. (adenosine triphosphate, ATP) = a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions