O — oa ob oc od oe of og oh oi ok ol om on oo op or os ot ou ov ow ox oy oz
ocarina |ˌɑːkəˈriːnə| — egg-shaped terra cotta wind instrument with a mouthpiece and finger holes
occasion |əˈkeɪʒn| — an event that occurs at a critical time
occasional |əˈkeɪʒənl| — occurring from time to time
occasionalism |əˈkeɪʒənlɪzəm| — (philosophy) A metaphysical doctrine that holds that all events are occasioned (caused) by God himself
occasionally |əˈkeɪʒnəlɪ| — sporadically and infrequently
occasions |əˈkeɪʒənz| — something you have to do
Occident |ˌɑːksəˈdent| — the countries of (originally) Europe and (now including) North America and South America
occidental |ˌɑːkɪˈdentl| — a native inhabitant of the Occident
occidentalism |ˌɒksɪˈdentəlɪzm| — the scholarly knowledge of western cultures and languages and people
occipital |ɑkˈsɪpətəl| — of or relating to the occiput
occiput |ˈɑːksəpʌt| — back part of the head or skull
occlude |əˈkluːd| — block passage through
occlusion |əˈkluːʒn| — closure or blockage (as of a blood vessel)
occlusive — a consonant produced by stopping the flow of air at some point and suddenly releasing it
occult |əˈkʌlt| — supernatural forces and events and beings collectively
occultation — one celestial body obscures another
occultism |əˈkʌltɪzəm| — the study of the supernatural
occultness — The state or condition of being occult.
occupancy |ˈɑːkjəpənsɪ| — an act of being a tenant or occupant
occupant |ˈɑːkəpənt| — someone who lives at a particular place for a prolonged period or who was born there
occupation |ˌɑːkjʊˈpeɪʃn| — the principal activity in your life that you do to earn money
occupational |ˌɑːkjʊˈpeɪʃənl| — of or relating to the activity or business for which you are trained
occupied |ˈɑːkjʊpaɪd| — resided in; having tenants
occupier |ˈɑːkjʊpaɪər| — someone who lives at a particular place for a prolonged period or who was born there
occupy |ˈɑːkjʊpaɪ| — keep busy with
occupying |ˈɑːkjəˌpaɪɪŋ| — Present participle of occupy.
occur |əˈkɜːr| — come to pass
occurence — Common misspelling of occurrence.
occurrence |əˈkɜːrəns| — an event that happens
occurring |əˈkɜːrɪŋ| — Present participle of occur.
ocean |ˈəʊʃn| — a large body of water constituting a principal part of the hydrosphere
ocean-going |ˌɡəʊɪŋ| — (nautical) Designed and equipped to be capable of sailing on an ocean.
Oceanian |ˌəʊʃɪˈeɪnjən| — From Oceania.
oceanic |ˌəʊʃɪˈænɪk| — an eastern subfamily of Malayo-Polynesian languages
oceanographic |əʊʃənəˈɡræfɪk| — relating to oceanography, the science of oceans
oceanography |ˌəʊʃəˈnɑːɡrəfɪ| — the branch of science dealing with physical and biological aspects of the oceans
ocellus |əˈseləs| — an eye having a single lens
ocelot |ˈɑːsəlɑːt| — nocturnal wildcat of Central America and South America having a dark-spotted buff-brown coat
ocher — a moderate yellow-orange to orange color
ochlocracy |ɒkˈlɒkrəsɪ| — a political system in which a mob is the source of control; government by the masses
ochre |ˈəʊkər| — any of various earths containing silica and alumina and ferric oxide; used as a pigment
octagon |ˈɑːktəɡɑːn| — an eight-sided polygon
octagonal |ɑːkˈtæɡənl| — of or relating to or shaped like an octagon
octahedral |ˌɑːktəˈhiːdrəl| — Having eight plane surfaces; thus, in the shape or form of an octahedron.
octahedron |ˌɑːktəˈhiːdrən| — any polyhedron having eight plane faces
octal |ˈɒktəl| — of or pertaining to a number system having 8 as its base
octane |ˈɑːkteɪn| — any isomeric saturated hydrocarbon found in petroleum and used as a fuel and solvent
octangular |ɑːkˈtæŋɡjʌlər| — of or relating to or shaped like an octagon
octant |ˈɑːktənt| — a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration
octarchy |ˈɑːktɑːrkiː| — A government consisting of eight people
octave |ˈɑːktɪv| — a feast day and the seven days following it
octavo |ɑːkˈteɪvəʊ| — the size of a book whose pages are made by folding a sheet of paper three times to form eight leaves
octennial |ɑːkˈteniːəl| — Occurring every eight years.
octet |ɑːkˈtet| — the cardinal number that is the sum of seven and one
octette |ɒkˈtet| — eight performers or singers who perform together
octillion |akˈtɪljən| — the number that is represented as a one followed by 27 zeros
October |ɑːkˈtəʊbər| — the month following September and preceding November
octodecimo |ɑːktəˈdesəməʊ| — (paper, printing) A size of a sheet of paper resulting from folding and cutting a sheet of paper into eighteenths (3.5"-4.5" x 4.9"-5.9").
octogenarian |ˌɑːktədʒəˈnerɪən| — someone whose age is in the eighties
octonary |ˈɒktə(ʊ)n(ə)rɪ| — the cardinal number that is the sum of seven and one
octopus |ˈɑːktəpəs| — tentacles of octopus prepared as food
octoroon |ɑːktəˈruːn| — an offspring of a quadroon and a white parent; a person who is one-eighth black
octosyllabic |ˌɑːktəʊsɪˈlæbɪk| — having or characterized by or consisting of eight syllables
octosyllable |ˈɑːktəʊsɪləbl| — a verse line having eight syllables or a poem of octosyllabic lines
octuple |ˈɑːktʊpəl| — having eight units or components
ocular |ˈɑːkjələr| — combination of lenses at the viewing end of optical instruments
oculist |ˈɑːkjəlɪst| — a person skilled in testing for defects of vision in order to prescribe corrective glasses