opera-hat
1>  ; 

operability
1> 
2> _. 

operable
1> 
2> _. 

operagoer
1>  ; ; 

operand
1> _.  , 
2> _. 

operant
1>  , ; ;
_Ex:
cotton operants 
2> 
3> _. ,   
4> _. ,  
5> _.  
6> ; ; ;
_Ex:
operant condition  
7> ; ; ;
_Ex:
operant force  ;
_Ex:
operant motive  ;
_Ex:
operant dose of a medicine   ;
_Ex:
to become operant   
8> ;
_Ex:
operant part   ()
9> _. ; ;
_Ex:
operant treatment  
_Id:
operant words  ,   

operant conditioning
1> _.  
2> _.     

operate
1> ;
_Ex:
to operate under a theory    -
;
_Ex:
this machinery operates day and night  
 ;
_Ex:
his mind always operated slowly    
2>  , ;  ;
_Ex:
different drugs operate on different bodily organs 
     ;
_Ex:
several causes operated to bring on the war  
  
3> ,   -;
_Ex:
this will operate changes in our way of thought  
   
4> ,  ;
_Ex:
to operate on smb.  -;
_Ex:
to operate smth.    -;
_Ex:
to operate on the brain    ;
_Ex:
to operate on appendicitis    
5>   (, );
_Ex:
to operate from _.  ;
_Ex:
the army operated over a wide area   
 ;
_Ex:
this corporation operates in several countries  
    
6>   ,  ;  ;
_Ex:
this engine operates by electricity   
 
7> ;
_Ex:
to operate a mashine  ;
_Ex:
can you operate a car?    ?
8> , ;
_Ex:
to operate a factory  
9> , 

operated
1> ;
_Ex:
remotely operated   ; 
 ; 

operatic
1> _. ;
_Ex:
operatic singer  

operating
1> ;
_Ex:
operating knife  ;
_Ex:
operating surgeon -,  
2> ;
_Ex:
maintenance _.    
3> _. , ;
_Ex:
operating costs  ;
_Ex:
operating ceiling _.  ;
_Ex:
operating characteristic _.  ;
_.  ;
_Ex:
operating life   ();
_Ex:
operating load  
4> _. ;
_Ex:
operating system  
5>  ( );
_Ex:
operating handle _.  ;
_Ex:
operating lever  ;
_Ex:
operating mechanism  
6> ;
_Ex:
operating personnel  
7> _. 
_Ex:
operating forces  ;
_Ex:
operating speed _.  ;
_Ex:
operating troops  ; 
 

operating room
1> 

operating table
1>  

operating theatre
1> 

operating theatre technician
1>  

operation
1> , ; ;
_Ex:
the operation of binding a book  ;
_Ex:
to begin operations  ;
_Ex:
to be in operation   ; ,
, ;
_Ex:
to be no longer in operation   ,
   ;
_Ex:
the plant has been in operation for several weeks 
   ;
_Ex:
are the street cars in operation?  ?
2> _.   ;
_Ex:
when does that rule go into operation?   
  ?;
_Ex:
to bring into operation   ;  
;
_Ex:
to extend operations    ();
_Ex:
the operation of this machine is simple   

3> ;
_Ex:
operation of breathing  
4> , ;
_Ex:
the operation of alcohol on the mind  
  
5>    ; ;
_Ex:
operations on the stock exchange  ;
_Ex:
engaged in some mysterious operations  -
 
6> _.  ;
_Ex:
abdominal operation  ;
_Ex:
chest operation   ;
_Ex:
stomach operation   ;
_Ex:
tonsils operation  ;
_Ex:
major operation  ;
_Ex:
to perform an operation for smth.  . 
 -;
_Ex:
to undergo an operation  
7> . _pl. , ;
_Ex:
reconstruction operations began at once  
   
8> _. ,  ; ; ;
_Ex:
operations map  ,  ;
_Ex:
operation order  ;
_Ex:
operations officer _.    ;
 ;
_Ex:
operations room _.  ;  ;
_.  ;
_Ex:
line of operations  , 

9> , 
10> _. ,  
11> _. , 

operational
1> 
2>   , ; ;
_Ex:
operational costs  
3> ;
_Ex:
operational models of language   ;
_Ex:
operational ceiling _.  
4> , ,   ;
_Ex:
operational data  ;
_Ex:
this machine is operational     

5> _. , ;
_Ex:
operational agency  ;
6> _.  ;
7> _.  ;
_Ex:
operational defence  ;
_Ex:
operational fatigue    
;
_Ex:
operational formation  ;
_Ex:
operational message  ;
_Ex:
operational task  ;
_Ex:
operational teamwork   ;
_Ex:
operational clearance _.     
8>   ;
_Ex:
operational missile ,   ,
 
9> _. , 

operational research
1> _.  

operationalism
1> _. 

operationalize
1>   ,  

operations analysis
1>  

operative
1>  , ; ;
_Ex:
cotton operatives 
2> 
3> _. ,   
4> _. ,  
5> _.  
6> ; ; ;
_Ex:
operative condition  
7> ; ; ;
_Ex:
operative force  ;
_Ex:
operative motive  ;
_Ex:
operative dose of a medicine   ;
_Ex:
to become operative   
8> ;
_Ex:
operative part   ()
9> _. ; ;
_Ex:
operative treatment  
_Id:
operative words  ,   

operatize
1>    ;
_Ex:
to operatize a novel    

operator
1> ;
_Ex:
operator's position  
2> , ; 
3> ; ; 
4> _.   ()
5> 
6> ,   ;
_Ex:
strong operator  
7> _. -,  
8> 
9> _.  ; , ;
_Ex:
private operator in civil aviation  

10>  
11> _. , ;
_Ex:
smooth operator  ;
_Ex:
big-time operator  
12> _. -
13> _. ,    
- 
14> 

opercle
1> _.  
2> _. , 

opercula
1> _pl.  operculum

opercular
1> _.    

operculate
1> _.    

operculum
1> _.  
2> _. , 

opere citato
1> _.  ;   

operetta
1> 
2>  

operette
1> 
2>  

operon
1> _. 

operose
1> _.   ; ; 
2> , , 

ophicalcite
1> _. 

ophicaleide
1>  (  )

ophidian
1> 
2>    
3> , 

ophidiarium
1> , 

ophiolatry
1> 

ophiolite
1> _. 

ophiology
1>  ,  

ophiophagous
1> _.  

ophite
1> _. 

ophthalmia
1> _. 

ophthalmic
1>    
2>  
3> _. ;
_Ex:
ophthalmic disease  ;
_Ex:
ophthalmic surgery  

ophthalmite
1> _.    

ophthalmitis
1> _. 

ophthalmo-
1>         :
_Ex:
ophthalmology 

ophthalmologist
1> 

ophthalmology
1> _. 

ophthalmoscope
1> _. 

ophthalmoscopy
1> _. 

opiate
1> , 
2> ,  ;
_Ex:
opiates to grief ,  
3>  
4> , ; 
5> 
6>   ,  
7> 
8> ,  ()

opilation
1> _. 

opine
1> _.  , ;
_Ex:
I opine that ...  ,  ...

opinion
1> ; ; ;
_Ex:
political opinions  ;
_Ex:
public opinion  ;
_Ex:
golden opinion  ;
_Ex:
horseback opinion _.  ;
_Ex:
a matter of opinion  ;
_Ex:
opinions differ    ;
_Ex:
in my opinion -;  ;
_Ex:
to have no settled opinions    ;
_Ex:
to be of opinion that ... ,  ...;
_Ex:
to have the courage of one's opinions  
 ;
_Ex:
to act up to one's opinions   
;
_Ex:
I'm entirely of your opinion   
 
2> ; ;
_Ex:
to have a good opinion of smb., smth.   
 -;  -;
_Ex:
to have no opinion of smb. smth     -,
-;
_Ex:
to have a good opinion of oneself     ;
 ;
_Ex:
to give an opinion   ;   ;
_Ex:
I haven't much of an opinion of him     ;
_Ex:
what's your opinion of this article?    
 ?
3>  ;
_Ex:
advisory opinion  ;
_Ex:
to have another opinion    
;
_Ex:
to have the best opinion 
.  
4> _.  ;
_Ex:
dissenting opinion  ;  

opinion column
1>   ;   


opinion page
1>        


opinion poll
1>   

opinionated
1> ; ; 

opinioned
1> _.   
2> _. 
3> ; ; 

opioid
1>  ; ; 
2> 

opiology
1>     

opisometer
1> _. 

opium
1> , 

opium den
1>   

opium eater
1>  

opium joint
1>   

opium plant
1> _.  

opium poppy
1> _.  

opium smoker
1>  

opium traffic
1> ,  

opodeldoc
1> _. 

opossum
1> _. ,  
_Id:
to play opossum  ; 
, ""

oppidan
1> 
2>   ,    
3> 

oppilate
1>  , 

oppo
1> _. "", ,    

opponency
1> , 
2> , 
3>         
 

opponent
1> , ; ;
_Ex:
he defeated his opponent in the election   
   
2> _. , 
3> _.  
4> ;  ;
_Ex:
on the opponent bank   
5> , 
6> , 
7> ; ;
_Ex:
he belongs to the opponent side   

opportune
1> , ;
_Ex:
opportune moment  
2> , ;
_Ex:
opportune remark  ;
_Ex:
opportune act  ;
_Ex:
opportune rain  

opportunelly
1> , ; 

opportuneness
1> ; 

opportunism
1> 
2> 

opportunist
1> 
2> ;
_Ex:
slick opportunist  , 
3> 

opportunistic
1> 

opportunity
1>  ;  ;
_Ex:
golden opportunity  ,  ;
_Ex:
opportunity target _.  ;
_Ex:
equality of opportunity  
_Ex:
at the first opportunity    ;
_Ex:
to afford an opportunity  ;
_Ex:
to have no opportunity for doing smth.   
 -;
_Ex:
to take the opportunity  ;
_Ex:
to seize one's opportunity   ,
 ;
_Ex:
to lose an opportunity, to let the opportunity slip 
;
_Ex:
when the opportunity occurs   ;
_Ex:
his life has been deficient in opportunities   
   
2> , ;
_Ex:
job opportunities     
 ;
_Ex:
the experiment offers great opportunities  
 
_Id:
opportunity makes the thief _.   ,  
  

opposable
1>   

oppose
1> , ;  ;
_Ex:
he opposed our arguments with determination  
  ;
_Ex:
he opposes our coming    
2> , , ;
_Ex:
to oppose the enemy army   

3> , , ;
_Ex:
to oppose the passage of the bill  
;
_Ex:
to oppose the resolution  ;
_Ex:
a swamp opposed the advance of the army  
 
4> ,  ,  ;
_Ex:
to oppose the plan   
5>   ;
_Ex:
they are diametrically opposed one another  
  
6> ; , ;
_Ex:
to oppose force with reason   ;
_Ex:
to oppose one's will against another's  
 
7>   ;   ;
_Ex:
to oppose the government    


opposeless
1> , 

opposer
1> _.    

opposing
1> ; ;
_Ex:
opposing military alignments   
 ;
_Ex:
opposing votes  "";
_Ex:
opposing reaction _.  ;
_Ex:
opposing team _.  

opposite
1> ;
_Ex:
direct opposite  ;
_Ex:
quite the opposite   ,  ;
_Ex:
black and white are opposites    -

2> ,    
3>  ; ;
_Ex:
the opposite side of the street   ;
_Ex:
the house opposite mine   
4> , ;
_Ex:
the opposite way  ;
_Ex:
you should go the opposite way     

5>   , , ,
;
_Ex:
the opposite sex  ;
_Ex:
opposite sides in a controversy    ;
_Ex:
opposite poles _.  ;
_Ex:
leaves on a stem ,     
 ;
_Ex:
to hold opposite opinions  

6> _. 
7> , ;
_Ex:
to sit opposite  ;
_Ex:
to play opposite _.     
       
8> , ;   ;
_Ex:
opposite Calais    ;
_Ex:
opposite Olivier _.    ;
_Ex:
to play opposite a leading lady _.   
,   ;
_Ex:
we sat opposite each other     ;
_Ex:
the cheque was made opposite my name    
 

opposite number
1> "", ,      


oppositely
1>       ( )

opposition
1> , ; ;
_Ex:
to meet with opposition  ;
_Ex:
to offer opposition  ;
_Ex:
we ran up against a lot of opposition   
 ;
_Ex:
the army met with little opposition   
;
2> , ; ;
_Ex:
opposition in business   ;
_Ex:
opposition of character  ;
_Ex:
they found themselves in opposition to each other 
 
3> ;
_Ex:
the O. leader  ;
_Ex:
the O. benches    ;
_Ex:
opposition newspaper  ;
_Ex:
to be in opposition   ;
_Ex:
Her Majesty's O.     

4> _. 
5> _. 

oppositional
1> ; 

oppositionist
1> ; 

oppositive
1> _. , 
2> _.  

oppress
1> , ;
_Ex:
to oppress the weak  ;
_Ex:
to oppress the people  
2>  ; ;
_Ex:
to feel oppressed with the heat   ;
_Ex:
to be oppressed with grief   ;
_Ex:
a sense of trouble ahead oppressed my spirits ,
     ,  

oppression
1> ; ; ; ;
_Ex:
victims of oppression  ;
_Ex:
under the oppression  
2> , ;
_Ex:
a feeling of oppression  

