Showing Results for "Os"

See Also:

• plural of O.

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• os
  os

  noun

  a bone.
• Os
  Os

  osmium.
• OS
  OS

  abbreviation

  Old Saxon. Also O.S.
• o/s
  o/s

  (of the calendar) Old Style.
• O/S
  O/S

  (of the calendar) Old Style.
• O.S.
  O.S.

  abbreviation

  (in prescriptions) the left eye.
• o.s.
  o.s.

  abbreviation

  out of stock

os

¹ American  

[os] / ɒs /

noun

ossa plural

1. Anatomy, Zoology. a bone.

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os ² American  

[os] / ɒs /

noun

ora plural

1. Anatomy, Zoology. a mouth or orifice of the body.

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os ³ American  

[ohs] / oʊs /

noun

osar plural

1. Geology. an esker, especially when of great length.

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Os ⁴ American  

1. Symbol, Chemistry. osmium.

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OS ⁵ American  

abbreviation

1. Old Saxon. Also O.S.

2. Computers. operating system.

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o/s ⁶ American  

1. (of the calendar) Old Style.

2. out of stock.

3. (in banking) outstanding.

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O/S ⁷ American  

1. (of the calendar) Old Style.

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O.S. ⁸ American  

Or o.s.

abbreviation

1. (in prescriptions) the left eye.

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O.S. ⁹ American  

abbreviation

1. Old Saxon. Also OS

2. (of the calendar) Old Style.

3. ordinary seaman. Also o.s.

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OS ¹ British  

abbreviation

1. Old School

2. Old Style (method of reckoning dates)

3. Ordinary Seaman

4. (in Britain) Ordnance Survey

5. outsize

6. Old Saxon (language)

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o.s. ² British  

abbreviation

1. out of stock

2. banking outstanding

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Os ³ British  

symbol

1. osmium

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os ⁴ British  

/ ɒs /

noun

1. anatomy the technical name for bone

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os ⁵ British  

/ ɒs /

noun

1. anatomy zoology a mouth or mouthlike part or opening

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os ⁶ British  

/ əʊs /

noun

1. another name for esker

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Other Word Forms

Inflected Forms

noun

• ora
  plural
• osar
  plural
• ossa
  plural

Etymology

Origin of os¹

First recorded in 1540–50; from Latin os (inflectional stem oss- ) “bone”

Origin of os²

First recorded in 1730–40; from Latin ōs (inflectional stem ōr- ) “mouth”

Origin of os³

First recorded in 1840–50 as osar (plural); from Swedish ås (plural åsar ) “ridge (of a hill),” from Old Norse áss “thick pole or main beam; rocky ridge”

Origin of O.S.⁸

From Latin oculus sinister

Example Sentences

"The Dutch experience in my opinion offers a warning for Canada," Os cautioned.

From BBC • May 15, 2026

Os reveals that she and Morrison worked on a third song that they’re still putting the finishing touches on.

From Los Angeles Times • Mar. 20, 2026

“It’s very beautiful to know that you have a partner that knows what you go through and that can give you advice from his experiences as well,” Os says.

From Los Angeles Times • Mar. 20, 2026

Os achieved an international breakthrough with her visual album, 2022’s “K23.”

From Los Angeles Times • Mar. 20, 2026

Funny thing is I knew what the shirt said because of the two Os in the middle.

From "The Truth as Told by Mason Buttle" by Leslie Connor