noun
1 medical
ADJECTIVE
▪ major
▪ minor , small
▪ life-saving , vital
▪ emergency
▪ routine ( esp. BrE )
▪ delicate
▪
a delicate eye ~
▪ exploratory
▪ surgical , transplant
▪ heart , knee , etc.
VERB + OPERATION
▪ have , undergo
▪
He had an ~ to remove a growth.
▪ come through , survive
▪
She came through the ~ well.
▪ carry out , perform
▪
the surgeon performing the ~
PREPOSITION
▪ during a/the ~
▪
She woke during the ~.
▪ ~ for
▪
an ~ for a kidney problem
▪ ~ on
▪
a major ~ on his heart
2 organized activity
ADJECTIVE
▪ big , large-scale , major , massive
▪ covert , undercover
▪ combined , joint
▪ tricky ( esp. BrE )
▪
a tricky rescue ~
▪ successful
▪ combat , intelligence , military , naval , police
▪ air , flight , ground , land , sea
▪
US forces had to conduct ground and air ~s.
▪
The airline has appointed a new director of flight ~s.
▪ guerrilla
▪ clean-up , counterterrorist , drilling , mining , mopping-up , offensive , peacekeeping , relief , rescue , salvage , security , tactical
▪
UN troops supervised the relief ~s.
▪ banking , building , business , commercial
▪
restrictions placed on business ~s
▪ psychological ~s , special ~s
▪
Special ~s forces were on the ground in Afghanistan.
VERB + OPERATION
▪ begin , launch , mount , undertake
▪
The authorities launched a massive security ~ in the city.
▪ carry out , conduct , run
▪ oversee , supervise
PREPOSITION
▪ during a/the ~
▪
during joint military ~s
PHRASES
▪ a theatre/theater of ~s (= where military operations take place)
3 fact of sth functioning
ADJECTIVE
▪ effective , efficient , smooth
▪ normal
▪ daily , day-to-day
▪
the smooth day-to-day ~ of the department
VERB + OPERATION
▪ come into
▪
A ceasefire came into ~ in May.
▪ bring sth into ( esp. BrE ), put sth into
▪ cease
▪
The factory will cease ~ at the end of the year.
PREPOSITION
▪ during ~
▪
The machine can get very hot during ~.
▪ in ~
▪
The current tax system has been in ~ for ten years.
PHRASES
▪ in full ~ , into full ~
▪
the only reactor in full ~