Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
estivation is a noun meaning "(zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period". It carries 2 recorded senses.
(zoology) cessation or slowing of activity during the summer; especially slowing of metabolism in some animals during a hot or dry period
zoology
(botany) the arrangement of sepals and petals in a flower bud before it opens
botany
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 estivation come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.