• (hepatitis d virus) Any viral organism that can be assigned to the species Hepatitis D virus.
  CDISC Terminology
  Clinical Data Interchange Standards Consortium (CDISC), 2021
• (hepatitis d virus) A small circular enveloped RNA virus having a negative sense, single-stranded, closed circular RNA genome. It is considered to be a subviral satellite because it requires the assistance of viral particles from hepatitis B virus to replicate and infect other hepatocytes.
  NCI Thesaurus
  U.S. National Cancer Institute, 2021
• (hepatitis d virus) Single-stranded circular RNA virus of animals; dependent on hepatitis B virus replication for its expression; involved in chronic liver disease.
  CRISP Thesaurus
  National Institutes of Health, 2006
• A defective virus, containing particles of RNA nucleoprotein in virion-like form, present in patients with acute hepatitis B and chronic hepatitis. It requires the presence of a hepadnavirus for full replication. This is the lone species in the genus Deltavirus.
  NLM Medical Subject Headings
  U.S. National Library of Medicine, 2021
• A type of hepatitis virus that may be present in the body at the same time as the hepatitis B virus. It makes the hepatitis (inflammation of the liver) caused by hepatitis B much worse. The hepatitis D virus and the hepatitis B virus are spread to others through blood or sexual contact. Infants born to infected mothers may also become infected with the virus.
  NCI Dictionary of Cancer Terms
  U.S. National Cancer Institute, 2021