Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
transpiration is a noun meaning "the passage of gases through fine tubes because of differences in pressure or temperature". It carries 3 recorded senses.
the passage of gases through fine tubes because of differences in pressure or temperature
the process of giving off or exhaling water vapor through the skin or mucous membranes
the emission of water vapor from the leaves of plants
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 transpiration come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.