Words starting with o
octagonal octahedral octahedrite octahedron octal octal notation octamer octamerous octameter octan octandrious octane octane number octane-rating octanedioic acid octangle octangular octanoic acid octans octant octarchy octaroon octastyle octateuch octavalent octave octave coupler octavia octavian octavius octavo octavus octennial octet octillion octo- october october revolution octobrist octocentenary octodecillion octodecimo octofoil octogenarian octomerous octometer octonary octopi octopod octopus octoroon octosyllabic octosyllable octroi octuple octuplet octuplicate octyl alcohol octyl phenol ocular ocularist oculate oculi oculist oculo- oculogyric oculomotor oculomotor nerve oculonasal oculus od od'd oda oda nobunaga odah odalisk odalisque odas odd odd fellow odd man out odd or even odd permutation odd trick odd-even check odd-job odd-jobman odd-lotter odd-man odd-man rush odd-pinnate oddball odder oddest oddfellow oddish oddities oddity oddly oddment