Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
invagination is a noun meaning "the condition of being folded inward or sheathed". It carries 2 recorded senses.
the condition of being folded inward or sheathed
the folding in of an outer layer so as to form a pocket in the surface
“the invagination of the blastula”
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 invagination come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.