au·to·some 
(ôtə-sōm′)
(ôtə-sōm′)n.
A chromosome that is not a sex chromosome.
au′to·somal (-sōməl) adj.
au′to·somal·ly adv.
- orthographer
- orthographic
- orthographical
- orthographically
- orthographist
- orthography
- ortholog
- orthologous
- orthologue
- orthomolecular
- orthomyxovirus
- orthopaedics
- orthopedic
- orthopedically
- orthopedics
- orthopedist
- orthopsychiatric
- orthopsychiatrical
- orthopsychiatrist
- orthopsychiatry
- orthopteran
- orthopterous
- orthopyroxene
- orthorhombic
- orthoscopic