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platform

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The definition of a platform is a raised stage, or a forum in which an idea can be shared, or a standard for computer hardware that determines what types of software it can run, or is a series of beliefs of a political group.

(noun)

An example of a platform is a raised surface next to a train track that you stand on while you wait for the train.
An example of a platform is a graduation where you are asked to give the speech; aplatform for your ideas.
Windows or OSX (mac) are examples of a computer platform.
An example of aplatform is a policy against big government and for individual freedoms; a platform of a political party.

See platform in Webster's New World College Dictionary

noun

a raised horizontal surface of wood, stone, or metal; specif.,
1. a raised stage or flooring beside railroad tracks or the like
2. a raised flooring or stage for performers, speakers, etc.
☆ a statement of principles and policies, esp. of a political party
a shoe with a platform sole: in full
1. a type of computer or other electronic hardware device having a standard design for use with a compatible operating system, software, etc.
2. such an operating system, software, etc. having a standard design for use with compatible programs, applications, etc.

Origin: Fr plate-forme, lit., flat form: see plate & form

adjective

designating a thick sole of cork, leather, etc. for a shoe
designating a shoe with such a sole

See platform in American Heritage Dictionary 4

noun

a. A horizontal surface raised above the level of the adjacent area, as a stage for public speaking or a landing alongside railroad tracks.
b. A vessel, such as a submarine or an aircraft carrier, from which weapons can be deployed.
c. An oil platform.
A place, means, or opportunity for public expression of opinion: a journal that served as a platform for radical views.
A vestibule at the end of a railway car.
A formal declaration of the principles on which a group, such as a political party, makes its appeal to the public.
a. A thick layer, as of leather or cork, between the inner and outer soles of a shoe, giving added height.
b. A shoe having such a construction.
Computer Science The basic technology of a computer system's hardware and software that defines how a computer is operated and determines what other kinds of software can be used.
Geology
a. A flat elevated portion of ground.
b. The ancient, stable, interior layer of a continental craton composed of igneous or metamorphic rocks covered by a thin layer of sedimentary rock.