1. Of or relating to or derived from axioms
   - axiomatic, postulational

See also: axiom

• genus Nypa
• genus Nyssa
• genus Oceanites
• genus Ochna
• genus Ochotona
• genus Ochroma
• genus Ocimum
• genus Octopus
• genus Ocyurus
• genus Odobenus
• genus Odocoileus
• genus Odontaspis
• genus Odontoglossum
• genus Odontophorus
• genus Oecanthus
• genus Oedogonium
• genus Oenanthe
• incrust
• incrustation
• incubate
• incubation
• incubation period
• incubative
• incubator
• incubatory