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

Losing your iPhone in a taxi is an ancient form of losing the OS you love.

From The Daily Beast

The female OS names herself Samantha (voiced by Scarlett Johansson) and before long, Theodore finds himself falling for her.

From The Daily Beast

OS X is needed to run Final Cut Pro, a state-of-the-art video editing software, and Linux is used to hack into wireless networks.

From The Daily Beast

Down the road I would not be surprised if Apple finds a way to merge iOS and OS X into a single unified operating system.

From The Daily Beast

That's why instead of bringing the Mac OS down to its new devices, Apple is bringing the closed iPhone system up.

From The Daily Beast

The ashes were then collected in a cloth to be dried, and the ceremonial bone , called os resectum, was buried.

From Project Gutenberg

The latter have the os zygomaticus large, whereas it is small in this animal.

From Project Gutenberg

The os sacrum is composed of five vertebr, as in man, but in apes or monkeys of only three.

From Project Gutenberg

Like numerous other nouns, it has its diminutive in os, its plural in wug, and its local form in ing.

From Project Gutenberg

Os-ce-o-l, the Black Drink; a warrior of very great distinction.

From Project Gutenberg