A salt or ester containing three phosphate groups. (noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "triphosphate" in a sentence
"The DNA polymerase, which isn't shown, is able to add additional nucleotides (a sugar + base combination) under two conditions: they're in the "triphosphate" form, with three phosphate groups in a row, and they base pair successfully with the complementary strand."
"Have you ever heard of adenosine triphosphate, ATP?"
"The treatment increases adenosine triphosphate, a molecule used for energy in the muscle, says Dr. Perricone, adding that a more youthful appearance is seen after the first treatment."