Dictionary.com
Thesaurus.com
Showing Results for "os"
See Also:
  • plural of O.
Jump to:
  • 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
Synonyms

os

1 American  
[os] / ɒs /

noun

ossa plural
  1. Anatomy, Zoology. a bone.


os 2 American  
[os] / ɒs /

noun

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


os 3 American  
[ohs] / oʊs /

noun

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


Os 4 American  
  1. Symbol, Chemistry. osmium.


OS 5 American  

abbreviation

  1. Old Saxon. Also O.S.

  2. Computers. operating system.


o/s 6 American  
  1. (of the calendar) Old Style.

  2. out of stock.

  3. (in banking) outstanding.


O/S 7 American  
  1. (of the calendar) Old Style.


O.S. 8 American  
Or o.s.

abbreviation

  1. (in prescriptions) the left eye.


O.S. 9 American  

abbreviation

  1. Old Saxon. Also OS

  2. (of the calendar) Old Style.

  3. ordinary seaman. Also o.s.


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)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

o.s. 2 British  

abbreviation

  1. out of stock

  2. banking outstanding

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Os 3 British  

symbol

  1. osmium

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

os 4 British  
/ ɒs /

noun

  1. anatomy the technical name for bone

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

os 5 British  
/ ɒs /

noun

  1. anatomy zoology a mouth or mouthlike part or opening

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

os 6 British  
/ əʊs /

noun

  1. another name for esker

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

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

Vocabulary lists containing os

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

They eventually named their institute for an online trend that had slime enthusiasts replacing the vowels in their name with double o’s, so Kira would become “Kooroo” and slime becomes “Sloomoo.”

From Washington Post • Jun. 30, 2022

Like other Romance languages, Spanish divides most endings of nouns into masculine o’s or feminine a’s.

From Washington Times • Dec. 12, 2021

Plosives, or stops, convey “slower” and “bigger” — as do vowels that are voiced at the back of the throat, like the o in “token” or the double o’s in “food.”

From New York Times • Jan. 15, 2015

Texting and Millennials The phone holds a million x’s and o’s.

From Forbes • Jun. 5, 2013

It was almost perfect, just a fraction flatter and shakier than Betty Jean’s voice had been, the o’s and ah’s parodies of Betty Jean’s pretentious ones.

From "Jacob Have I Loved" by Katherine Paterson

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "os" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com