octahedron octal octal digit octal notation octal number system octal numeration system octameter octane octane number octane rating octanedioic acid octangular octanoic acid octans octant octave Octavia Octavia, NE octavian octavo octet octette octillion october october 12 october 24 october revolution octoberfest Octodon Cumingii octogenarian octonary octopod octopoda octopodidae octopus octoroon octosyllabic octosyllable octroi octuple ocular ocular muscle ocular spectrum oculism oculist oculomotor oculomotor nerve oculopharyngeal muscular dystrophy oculus oculus dexter oculus sinister ocx Ocydromus australis Ocymum basilicum Ocymum minimum Ocypus olens ocyurus ocyurus chrysurus od oda odalisque Odanah Odanah, WI odapi odbc odbms odc odd odd fellow odd fish odd hassel odd job odd man out odd unmatched unmated unpaired odd-even check odd-job odd-job man odd-leg caliper odd-pinnate odd-pinnate leaf odd-toed ungulate oddball oddish oddity oddly oddment oddments oddness oddone colonna odds odds and ends odds-maker odds-on ode Odebolt Odebolt, IA oded Odell Odell, IL Odell, NE Odell, OR Odem Odem, TX Oden Oden, AR Odenton Odenton, MD Odenville Odenville, AL oder oder river odesa odessa Odessa, DE Odessa, FL Odessa, MN Odessa, MO Odessa, NY Odessa, TX Odessa, WA odets odette odf odi odia odif