say it: FAWR-muh-tiv
formative is an adjective and noun meaning "capable of forming new cells and tissues". It carries 3 recorded senses.
capable of forming new cells and tissues
“a formative zone in developing bone”
biology
forming or capable of forming or molding or fashioning
“a formative influence”
“a formative experience”
“the plastic forces of nature”
minimal language unit that has a syntactic (or morphological) function
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 formative come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.