oryx /'Driks;
NAmE 'o:r-; 'a:r-/ noun a large antelope with long straight horns A)§#
( ftj£^ )
OS /,au
'es; NAmE ,ou/ abbr. 1 (computing if) operating system 2 Ordnance Survey 3 ordinary seaman Oscar™ /'Dska(r); NAmE 'a:s-/ noun = Academy Award : The movie was
nominated for an Oscar. &
<> 0 an Oscar nomination/
winner
os cil late /'nsileit; ‘a:s-/ verb
[V] 1 ~ (between
A and B) (formal) to keep changing from
one extreme of feeling or behaviour to another, and back again ( If ^ Boa SWING: Her moods oscillated
between depression and elation. RtM
2 (physics $]) to keep moving from
one position to another and back again jg ; IS^tl: Watch how the needle
on the dial oscillates, if A 4 ± 6(J la ft ft ftMf stl „ 3 (physics % (of an electric
current, radio waves, etc. ft if, ft ^fti&#) to change
in strength or direction at regular intervals Weft); oscillation /.DSi'leiJn; NAmE ,a:s-/ noun (formal) ~ (between A and B) 1 [U, sing.] a regular
movement between one position and another or between one amount and another MU;
$gzs# the
oscillation of the compass needle ^ # li ft 6iJ jg zft
o the
economy’s continual oscillation between growth and recession if it -ft il A 10] 69 1# 2 [C] a single movement
from one position to
another of sth that is oscillating — IX Tf]; 'ffzij; Jg ipi : the oscillations of the pound against
foreign currency 3 [U, C] a
repeated change between
different feelings, types of behaviour or ideas ( tfift ffM. S#,69 )
ft
A; # , #c It ^ : his oscillation, as a
teenager,
between science and art
os cil la tor /'Dsilerta(r); NAmE 'a:s-/ noun (physics $}) a piece of equipment
for producing oscillating
electric currents #rM#f
os cil lo scope /a'silaskaup; NAmE -skoup/ noun (physics $)) a piece of equipment
that shows changes in electrical current as waves in a line on a screen ft
osier /'auzia(r);
NAmE 'ou3ar/ noun a type of
os-mium /'Dzmiam; NAmE 'aizmiam/ noun [U] (symb Os) a chemical element. Osmium is a hard
silver-white metal. Ig
os-mo-sis /nz'mausis;
NAmE aiz'mou-/ noun [u] 1 (biology ft or chemistry it) the gradual passing
of a liquid through a membrane (=
a thin layer of material) as a result of there being different amounts of
dissolved substances on either side of the membrane i§ ; #
: Water passes into the
roots of a plant by osmosis. 7jc
o
2 the gradual process of learning or being influenced by sth, as a result of
being in close contact with it ft if § ;
it St it ► os-mot-ic
/nz'mntik;
NAmE a:z'ma:tik/
adj.: osmotic pressure #
MEEft
os-prey /'nsprei;
NAmE 'a:s-/ noun a large bird of prey (= a bird that kills other
creatures for food) that eats fish f§; M.M
os se ous /'nsias; NAmE 'a:s-/ adj. (technical ft if) made of or
turned into bone #69; #il69; #ft69 os sify /'nsifai; NAmE 'a:s-/ verb [usually
passive] (os-si-fies,
os-si-fy-ing, ossified, os-si-fied) (formal, disapproving) 1 to become or make
sth fixed and unable to change M it; ^@ftft$: [VN] an ossified political system lift 69 $C in #J fk [also V] 2 [VN]
(technical ft if) to become or
make sth hard like bone # it;
# fft it ► os-si-fi-ca-
tion noun [U] (formal)
os-ten-sible /n'stensabl;
NAmE a:'st-/ adj. [only before noun]
seeming or stated to be real or true, when this is perhaps not the case A ffi
69; el ft 69; [§! M 611 H7T1 apparent : The ostensible reason
for his absence was illness, ilgftii^lo ► os-ten-sibly
/-abli/
adv.:
Troops were sent in, ostensibly to protect the
civilian population. iiftA&^^&fflititT^IAo os ten ta tion /.nsten'teijn; NAmE ,a:s-/ noun [U] (disapproving) an exaggerated display of wealth,
knowledge or skill that is made in order to impress people ( )#]#
am, ^ft
os ten ta tious /.nsten'teijas; NAmE ,a:s-/ adj. 1 (disapproving) expensive or noticeable in a way
that is intended to impress people jg 69; 61);
i¥ 69
EEC] showy 2 (disapproving) behaving in a way that is meant
to impress people by showing how rich, important, etc. you are j&M 61]; #£#69; A A 69 3 (of an action ft zjj) done in a very obvious way so that people
will notice it ^^69; IS® 6lJ: He gave an ostentatious yawn. ► os-ten-ta-tious-ly
adv.: ostentatiously dressed ISM 69 IT#! osteo- /’Dstiau; NAmE 'aistiou-/ combining form (in nouns and adjectives
ftj&£;iIJfflj]2l?ftl) connected with bones #69: osteopath #?r H pip
osteoarth
ritis /.Dstiaua:'0raitis;
NAmE ,a:stioua:r'0-/ noun [U] (medical HE) a disease that causes
painful swelling and permanent damage in the joints of the body, especially the
hips, knees and thumbs osteo path /'DstiapaeG; NAmE 'a:s-/ noun a person whose job involves
treating some diseases and physical problems by pressing and moving the bones
and muscles # If E ; 31 # E ± — compare chiropractor
oste-op-athy
/.DSti'DpaOi;
NAmE ,a:sti'a:p-/ noun [U] the treatment of some
diseases and physical problems by pressing and moving the bones and muscles # ff ^; H#ft ► osteo path ic /,Dstia'pae0ik; NAmE ,a:s-/ adj. osteo-por-osis /.Dstiaupa'rausis; NAmE .aistioupa'rou-/ (also .brittle bone disease) noun [U] (medical E) a condition in which the bones become weak and are easily broken,
usually when people get older or because they do not eat enough of certain
substances
ost ler /'Dsla(r);
NAmE 'a:s-/ (NAmE also host-ler) noun (in the past) a man who took care
of guests’ horses at an
os-tra-cism
/'Dstrasizam;
NAmE 'a:s-/ noun [U] (formal) the act of deliberately not
including sb in a group or activity; the state of not being included ft ft os tra cize (BrE also -ise) /'nstrasaiz; NAmE 'a:s-/ verb [VN] (formal) to refuse to let sb be a member
of a social group; to refuse to meet or talk to sb ftjft; ftft EEE1 shun : He was ostracized by
his colleagues for refusing to support the strike. # @ Jg £ f# HIM M it ^ 65
^fto
os-trich
/'nstritj'; NAmE ‘a:s-; ‘o:s-/ noun 1 a very large African bird with a long neck
and long legs, that cannot fly but can run very fast ft 2 (informal) a person who prefers to ignore
problems rather than try and deal with them Other 0-w /• A6a(r)/ adj., pron.
1 used to refer to people or things that are additional or different to
people or things that have been mentioned or are known about ft#,: Mr Harris
and Mrs Bate and three
other teachers were there. Pp ftW. 0 Are there any
other questions? 2 ft ft #, |n] fg ft ? o I can’t see you
now—some other time, maybe.
M ft ft M JE ifc
tfe ft
#j 61) H # BE o <> Two buildings were
destroyed and many others damaged in the blast. MU*
m&va&mgt, o mis option
is preferable to any
other, ft ft ft #
ft fS[ — ft 3$ o o Some designs are better than
others, ft—# ft if —compare another(I) 2 the, my, your, etc. ~ used to refer to the second of
two people or things ( thrift )
gpft,
My other sister is a
doctor. 0
One son went to live in
0 He raised one arm and
then the other. #A;ft^—ftft, o You must ask one
or other of your
parents, ft ‘MM 65
X ^ M 0. 0
(humorous) You’ll have to ask
my
other half (~ husband