Os meaning

ōs
Osmium.
symbol
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A mouth or an opening.
noun
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Old Style.
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A bone.
noun
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A bone.
noun
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A bone.
noun
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The definition of an os is a mouth or hole.

An example of an os is a shirt opening for a head to go through.

noun
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A mouth; opening.
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Old Saxon.
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Old series.
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Old Style.
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Operating system.
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Ordinary Seaman.
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Out of stock.
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A mouth or an opening.
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(Operating System) The master control program in a computer or mobile device. The O-S acronym has been part of the names of various operating systems. Microsoft used DOS for many years in the PC, and Apple used OS 8, OS 9 and OS X in the Mac. For the major functions operating systems perform, see operating system. Some of the operating systems in this encyclopedia that have O-S in their name are TOS, DOS, PC-DOS, MS-DOS, DR-DOS, Mac OS, Mac OS X, iOS, OS/390 and OS/400.
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The master software program that controls the allocation and usage of all internal resources (e.g., memory, queuing, input/output, central processing unit [CPU], time, disk space, and transmission and reception processes) and, thereby, enables and controls the operation of the entire computer system.The OS forms the foundation for application software that performs end-user tasks such as word processing and mathematical calculation. An OS is largely software, although there are firmware components. See also firmware, program, and software.
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(rare, medicine) Bone.
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(rare) A mouth; an opening.
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In particular, either end of the cervix, internal (to the uterus) or external (to the vagina).
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An osar or esker.
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Abbreviation of Old Saxon.
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Operating system.
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Ordinary seaman.
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Other Word Forms

Noun

Singular:
os
Plural:
oi, ora, ossa

Origin of os

  • Swedish ås ridge from Old Norse āss

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin ōs mouth ōs- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Latin bone ost- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From neuter Latin word os with the genitive oris (meaning "mouth").

    From Wiktionary

  • From neuter Latin word os (genitive ossis) meaning "bone".

    From Wiktionary

  • From Latin os (“bone”)

    From Wiktionary

  • From Wiktionary