opening of new hall
opening of post-office or telephone exchange
opening of shop
opening of the beachgoing season
opening of the whole
opening one's eyes to the truth
opening or unsealing of bids
opening page of book
opening parenthesis
opening performance
opening quotation
opening sale
opening sentence
opening session
opening statement
opening through which dirt is swept
opening words or sentence
openly
openly and closely
openly and covertly
openly and in broad daylight
openly in broad daylight
openness
openwork bamboo basket
opera
opera glasses
opera house
operability
operable
operand
to operate
operated by the government
operated by the metropolitan government
operating
operating balance
operating cost
operating costs
operating expense
operating expenses
operating funds
operating loss
operating margin
operating officer
operating on a ten-minute schedule
operating or carrying on simultaneously
operating principles
operating profit
operating rate
operating ratio
operating room
operating system
operating table
operation
operation center
operation circuit
operation code
operation cost
operation director