Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
self-fertilization is a noun meaning "fertilization by the union of male and female gametes from the same individual". It carries one recorded sense.
fertilization by the union of male and female gametes from the same individual
Definitions, synonyms and semantic relations for self-fertilization come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.