1. Relating to the blood vessels or blood
   - hemal, haemal, hematal

See also: blood vessel

• obscurantist
• obscuration
• obscure
• obscurely
• obscureness
• obscurity
• obsecrate
• obsequious
• obsequiously
• obsequiousness
• obsequy
• observable
• observably
• observance
• observant
• observantly
• observation
• observation dome
• observation post
• observation station
• observation tower
• observational
• observator
• observatory
• observe