say it: PAH-lee-mawrf
polymorph is a noun meaning "an organism that can assume more than one adult form as in the castes of ants or termites". It carries one recorded sense.
an organism that can assume more than one adult form as in the castes of ants or termites
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 polymorph 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.