Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
rh-negative is an adjective meaning "of persons (or their blood) lacking the Rh factor present in their red blood cells". It carries one recorded sense.
of persons (or their blood) lacking the Rh factor present in their red blood cells
Definitions, synonyms and semantic relations for rh-negative come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. .