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