Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
flowage is a noun meaning "gradual internal motion or deformation of a solid body (as by heat)". It carries 3 recorded senses.
gradual internal motion or deformation of a solid body (as by heat)
“rock fracture and rock flowage are different types of geological deformation”
a body of water that has been created by deliberately flooding an area
“many campsites were located near the flowage”
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 flowage come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.