sea: Most of the kids have never seen the sea.
the deep: …a vast unfrequented pool, traversed by whales and creatures of the deep.
o cean-going ADJ [usu ADJ n] Ocean-going ships are designed for travelling on the sea rather than on rivers, canals, or lakes. □ At the height of his shipping career, he owned about 60 ocean-going vessels.
ocean|ic /oʊ ʃiæ n I k/ ADJ [ADJ n] Oceanic means belonging or relating to an ocean or to the sea. □ Many oceanic islands are volcanic.
ocean|og|ra|phy /oʊ ʃənɒ grəfi/ N‑UNCOUNT Oceanography is the scientific study of sea currents, the sea bed, and the fish and animals that live in the sea. ● ocean|og|ra|pher (oceanographers ) N‑COUNT □ …an oceanographer working on an environmental protection programme. ● oceano|graph|ic /oʊ ʃənəgræ f I k/ ADJ [ADJ n] □ …oceanographic research.
och /ɒ x/ CONVENTION Och is used to express surprise at something, or to emphasize agreement or disagreement with what has just been said. [IRISH , SCOTTISH ] □ 'Och be quiet then,' Shawn said. □ Och aye. I always liked him.
ochre /oʊ kə r / in AM, also use ocher COLOUR Something that is ochre is a yellowish orange colour. □ For our dining room I have chosen ochre yellow walls.
o'clock ◆◇◇ /əklɒ k/ ADV You use o'clock after numbers from one to twelve to say what time it is. For example, if you say that it is 9 o'clock, you mean that it is nine hours after midnight or nine hours after midday. □ The trouble began just after ten o'clock last night. □ I went to sleep, and at two o'clock in the morning I woke up.
Oct. Oct. is a written abbreviation for October . □ …Tuesday Oct. 25th.
oc|ta|gon /ɒ ktəgən/ (octagons ) N‑COUNT An octagon is a shape that has eight straight sides.
oc|tago|nal /ɒktæ gən ə l/ ADJ Something that is octagonal has eight straight sides. □ …a white octagonal box.
oc|tane /ɒ kte I n/
1 N‑UNCOUNT Octane is a chemical substance that exists in petrol or gasoline and that is used to measure the quality of the fuel. □ …high octane fuel for cars.
2 → see also high-octane
oc|tave /ɒ kt I v/ (octaves ) N‑COUNT An octave is a series of eight notes in a musical scale. It is also used to talk about the difference in pitch between the first and last notes in a musical scale.
oc|tet /ɒkte t/ (octets ) N‑COUNT [oft in names] An octet is a group of eight singers or musicians. □ …the Stan Tracey Octet.
Oc|to|ber /ɒktoʊ bə r / (Octobers ) N‑VAR October is the tenth month of the year in the Western calendar. □ Most seasonal hiring is done in early October. □ The first plane is due to leave on 2 October. □ My grandson has been away since last October.
oc|to|genar|ian /ɒ ktoʊdʒ I neə riən/ (octogenarians ) N‑COUNT An octogenarian is a person who is between eighty and eighty-nine years old.
oc|to|pus /ɒ ktəpəs/ (octopuses ) N‑VAR An octopus is a soft sea creature with eight long arms called tentacles which it uses to catch food. ● N‑UNCOUNT Octopus is this creature eaten as food.
ocu|lar /ɒ kjələ r / ADJ [ADJ n] Ocular means relating to the eyes or the ability to see. [MEDICAL ] □ Other ocular signs include involuntary rhythmic movement of the eyeball.
OD /oʊ diː / (OD's , OD'ing , OD'd ) VERB To OD means the same as to overdose . [INFORMAL ] □ [V ] His son was a junkie, the kid OD'd a year ago. ● N‑COUNT OD is also a noun. □ 'I had a friend who died of an OD,' she said.
odd ◆◆◇ /ɒ d/ (odder , oddest )
1 ADJ If you describe someone or something as odd , you think that they are strange or unusual. □ He'd always been odd, but not to this extent. □ What an odd coincidence that he should have known your family. □ Something odd began to happen. ● odd|ly ADV [ADV with v, ADV adj/-ed] □ …an oddly shaped hill. □ His own boss was behaving rather oddly.
2 → see also odd-looking
3 ADJ You use odd before a noun to indicate that you are not mentioning the type, size, or quality of something because it is not important. □ …moving from place to place where she could find the odd bit of work. □ I knew that Alan liked the odd drink.
4 ADV You use odd after a number to indicate that it is only approximate. [INFORMAL ] □ He has now appeared in sixty odd films. □ 'How long have you lived here?'—'Twenty odd years.'
5 ADJ [usu ADJ n] Odd numbers, such as 3 and 17, are those which cannot be divided exactly by the number two. □ The odd numbers are on the left as you walk up the street. □ There's an odd number of candidates.
6 ADJ You say that two things are odd when they do not belong to the same set or pair. □ I'm wearing odd socks today by the way.
7 PHRASE The odd man out , the odd woman out , or the odd one out in a particular situation is a person who is different from the other people in it. □ He is very much the odd man out in the team's successful season so far. □ Parents did not want their children to be the odd ones out.
8 → see also odds , odds and ends SYNONYMS odd ADJ
1
strange: Then a strange thing happened.
peculiar: Rachel thought it tasted peculiar.
unusuaclass="underline" They have replanted many areas with rare and unusual plants.