Syllable division and stress derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
semi-prostrate is an adjective meaning "imperfectly prostrate; prostrate for part of its length". It carries one recorded sense.
imperfectly prostrate; prostrate for part of its length
“the semi-prostrate evergreen, purple heather”
Definitions, synonyms and semantic relations for semi-prostrate come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .