to begin or start an action, process, or event

To depart from a place or to move away from a person; to separate from or deviate from

to research and develop new products, technologies, or human potential

To feel happy; to rejoice; to have a great time.

To develop, launch, or carry out a large-scale activity or project

To open, unfold, or uncover something by pushing, pulling, or unfastening it; used for doors, windows, books, or parcels.

to shoot; to open fire

to convene; to convoke; to call together a meeting or conference

open; overt; public; not hidden or secret

to open for public use or traffic; to be in operation, as in a library or park; to open to the world

To spread out or open up something folded or rolled up; to expand.

To release one's grip; to let go of something or someone.

to play a joke; to make fun of; to tease or play a prank on someone

To drive or operate a motor vehicle (such as a car, bus, or train)

to leave; to walk away; to move aside; to beat it or get out of the way

to open a door literally or figuratively

to separate, part, or divide; to become detached or disconnected

The policy of reforming the political and economic system and opening the country to the outside world, initiated in the late 1970s.

to expel a member from an organization, school, or workplace, or the act of doing so

to open one's mouth; to start to talk; to speak out or make a request

(of a liquid) to reach a rolling boil

To remove obstacles from or dredge a path such as a tunnel, river, or road

to pull something open, such as a drawer, a door, or a zipper

to start a construction project or begin production operations at a factory

to open up; to develop or expand territory, markets, or horizons; to break new ground or pioneer a new field

An area designated for economic or technological development, typically involving special policies to attract foreign investment and advanced technology.

to formally begin a conference, ceremony, or large-scale activity

to start shooting; to begin a military battle

To gather together for a meeting, report, or discussion; can refer to either hosting the event or participating in it.

to open for business; to set up or establish an office, factory, or shop

to solve a mystery or riddle; to clear up a misunderstanding or dispel doubts

To start or initiate something, often used in the sense of opening up a new era, field, or opportunity.

To commence trading on the stock exchange or other financial markets; the opening quotation of a market day

To open a new business or professional practice, such as a shop, clinic, or firm; to begin trading or serving customers.

(sports) a competition where there are few restrictions on who can enter, allowing both professionals and amateurs to participate

the formal ceremony held at the start of an event, such as a meeting, conference, exhibition, or sports competition; inauguration

To clear or open up for use; to build or carve out, such as a road, route, or channel.

expenditures or costs paid out; money spent

The start or opening stage of something.

cannot do without; to be unable to separate from; to be inevitably linked to

to start up; to initiate; to found or establish something new

to open, set up, or start a business, factory, or institution

to extract or exploit (natural resources such as minerals or oil); mining or exploitation

To open something fully or to its maximum extent.

to avoid; to keep away from; to evade; to parry

power switch; mechanical device used to turn electricity, gas, or water on and off

to start or begin a performance, sports match, or other public event; often used metaphorically for the beginning of any activity

open style; open-plan; designed without walls or barriers

to call a court to order or begin the judicial trial of a case