from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun An adenosine-derived nucleotide, C10H16N5O13P3, that contains high-energy phosphate bonds and is used to transport energy to cells for biochemical processes, including muscle contraction and enzymatic metabolism, through its hydrolysis to ADP. ATP is hydrolyzed to AMP when it is incorporated into DNA or RNA.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • initialism biochemistry adenosine triphosphate
  • initialism tennis Association of Tennis Professionals
  • initialism railways Automatic Train Protection
  • initialism aviation airline transport pilot Initialism of airline transport pilot.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions


from The American Heritage® Dictionary of the English Language, 4th Edition

[a(denosine) t(ri)p(hosphate).]


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