Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
stagnancy is a noun meaning "inactivity of liquids; being stagnant; standing still; without current or circulation". It carries 2 recorded senses.
inactivity of liquids; being stagnant; standing still; without current or circulation
a state of inactivity (in business or art etc)
“economic growth of less than 1% per year is considered to be economic stagnation”
commercial enterprise · art
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 stagnancy come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.