Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
undersize is an adjective meaning "smaller than normal for its kind". It carries one recorded sense.
smaller than normal for its kind
Definitions, synonyms and semantic relations for undersize come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.