- Orthonormality Subst. Adj.
- Orthonormalized Adj. Part. Perf.
- Orthooptic Adj.
- Orthooptical Adj.
- Orthopaedic Adj.
- Orthopantomogram Subst. Adj.
- Orthopantomograph Subst. Adj.
- Orthopantomography Subst. Adj.
- Orthopedic Adj. Subst.
- Orthopedical Adj.
- Orthophosphoric Adj. Subst.
- Orthophotograph Subst. Adj. Verb
- Orthophotomap Subst. Adj.
- Orthopneic Adj.
- Orthopnoeic Adj.
- Orthopolar Adj. Subst.
- Orthopole Subst. Adj.
- Orthopoxvirus Subst. Adj.
- Orthoprojector Subst. Adj.
- Orthopsychiatric Adj.
- Orthopsychiatrical Adj.
- Orthopteran Subst. Adj.
- Orthopterous Adj.
- Orthoptic Adj.
- Orthoptist Subst. Adj.
- Orthopyroxene Subst. Adj.
- Orthorhombic Adj.
- Orthorombic Adj.
- Orthoscheme Subst. Adj.
- Orthoscopic Adj.
- Orthosilicate Subst. Adj.
- Orthostatic Adj.
- Orthostatometer Subst. Adj.
- Orthostereoscopic Adj.
- Orthostichous Adj.
- Orthostochastic Adj.
- Orthosymmetric Adj.
- Orthosymplectic Adj.
- Orthosympletic Adj.
- Orthotic Adj. Subst.
- Orthotics Subst. Adj.
- Orthotist Subst. Adj.
- Orthotoluidine Subst. Adj.
- Orthotopic Adj.
- Orthotronic Adj.
- Orthotrophic Adj.
- Orthotropic Adj.
- Orthotropous Adj.
- Ortogonal Adj.
- Ortolan Subst. Adj.
- Ortoluidine Subst. Adj.
- Orwellian Adj.
- Oryx Subst. Eigenn. Adj.
- Osaka Subst. Eigenn. Adj.
- Oscan Adj. Subst.
- Oscilating Adj.
- Oscillation Subst. Adj.
- Oscillator Subst. Adj.
- Oscillatory Adj.
- Oscillogram Subst. Adj.