say it: AY-tee-pee
atp is a noun meaning "a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions". It carries one recorded sense.
a nucleotide derived from adenosine that occurs in muscle tissue; the major source of energy for cellular reactions
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for atp come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.