os

¹

[ os ]

noun

, plural os·sa [os, -, uh].

1. Anatomy, Zoology. a bone.

O.S.

²

or o.s.

abbreviation for

1. (in prescriptions) the left eye.

os

³

[ os ]

noun

, plural o·ra [awr, -, uh, ohr, -, uh].

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

O.S.

⁴

abbreviation for

1. Old Saxon ( def ). Also OS
2. (of the calendar) Old Style ( def 2 ).
3. ordinary seaman. Also o.s.

os

⁵

[ ohs ]

noun

, plural o·sar [oh, -sahr].

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

Os

⁶

1. Symbol, Chemistry. osmium.

OS

⁷

abbreviation for

1. Old Saxon ( def ). Also O.S.
2. Computers. operating system ( def ).

o/s

⁸

1. (of the calendar) Old Style.
2. out of stock.
3. (in banking) outstanding.

O/S

⁹

1. (of the calendar) Old Style.

o.s.

¹

abbreviation for

1. out of stock
2. banking outstanding

os

²

/ əʊs /

noun

1. another name for esker

os

³

/ ɒs /

noun

1. anatomy zoology a mouth or mouthlike part or opening

Os

⁴

the chemical symbol for

1. osmium

OS

⁵

abbreviation for

1. Old School
2. Old Style (method of reckoning dates)
3. Ordinary Seaman
4. (in Britain) Ordnance Survey
5. outsize
6. Old Saxon (language)

os

⁶

/ ɒs /

noun

1. anatomy the technical name for bone

Word History and Origins

Origin of os¹

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

Origin of os²

From Latin oculus sinister

Origin of os³

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

Origin of os⁴

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”

Word History and Origins

Origin of os¹

C19 osar (pl), from Swedish ås (sing) ridge

Origin of os²

C18: from Latin

Origin of os³

C16: from Latin: bone; compare Greek osteon

Example Sentences

As Kessler wisely noted at the top os his lengthy fact check of Trump's "assassination" lie, the only person who is asserting a right to assassinate political opponents is Donald Trump.

From Salon

"WOW rita ora really ate this look up i am fully obsessed with it!!" wrote one fan on Twitter.

From Salon

Texas Monthly magazine called “Señora Dolores Treviño,” a painting of his mother, “one of the best paintings of an artist’s mother since Whistler’s.”

From New York Times

Newton disliked infinitesimals, the little os in his fluxion equations that sometimes acted like zeros and sometimes like nonzero numbers.

From Literature

Is the museum presenting the history of cinema ora history of cinema?

From Los Angeles Times