Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
substantival is an adjective meaning "of or relating to or having the nature or function of a substantive (i.e. a noun or noun equivalent)". It carries one recorded sense.
of or relating to or having the nature or function of a substantive (i.e. a noun or noun equivalent)
“a substantival constituent”
grammar
Definitions, synonyms and semantic relations for substantival come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.