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[os] /ɒs/

noun, plural ossa
[os-uh] /ˈɒs ə/ (Show IPA)
1.
Anatomy, Zoology. a bone.
[os] /ɒs/
noun, plural ora
[awr-uh, ohr-uh] /ˈɔr ə, ˈoʊr ə/ (Show IPA)
1.
Anatomy, Zoology. a mouth or orifice of the body.
[ohs] /oʊs/
noun, plural osar
[oh-sahr] /ˈoʊ sɑr/ (Show IPA)
1.
Geology. an esker, especially when of great length.
1.
Symbol, Chemistry. .
1.
Old Saxon.
2.
Computers. operating system.
[oh] /oʊ/
noun, plural O’s or Os; o’s or os or oes.
1.
the fifteenth letter of the English alphabet, a vowel.
2.
any spoken sound represented by the letter O or o, as in box, note, short, or love .
3.
something having the shape of an O .
4.
a written or printed representation of the letter O or o.
5.
a device, as a printer’s type, for reproducing the letter O or o.
[oh] /oʊ/
interjection
1.
(used before a name in direct address, especially in solemn or poetic language, to lend earnestness to an appeal):
Hear, O Israel!
2.
(used as an expression of surprise, pain, annoyance, longing, gladness, etc.)
noun, plural O’s.
3.
the exclamation “O.”.
1.
(of the calendar) Old Style.
1.
(of the calendar) Old Style.
2.
out of stock.
3.
(in banking) outstanding.
1.
(in prescriptions) the left eye.
1.
Old Saxon.
2.
Old School.
3.
Old series.
4.
(of the calendar) Old Style.
5.
Also, o.s. .
/ɒs/
noun (pl) ossa (ˈɒsə)
1.
(anatomy) the technical name for bone
/ɒs/
noun (pl) ora (ˈɔːrə)
1.
(anatomy, zoology) a mouth or mouthlike part or opening
/əʊs/
noun (pl) osar (ˈəʊsɑː)
1.
another name for esker
Chemical symbol
1.
osmium
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)
/əʊ/
noun (pl) o’s, O’s, Os
1.
the 15th letter and fourth vowel of the modern English alphabet
2.
any of several speech sounds represented by this letter, in English as in code, pot, cow, move, or form
3.
another name for nought
symbol
1.
(chem) oxygen
2.
a human blood type of the ABO group See universal donor
3.
(logic) a particular negative categorial proposition, such as some men are not married: often symbolized as SoP Compare A, E, I2
abbreviation
4.
(Austral, slang) offence
/əʊ/
interjection
1.
a variant spelling of oh
2.
an exclamation introducing an invocation, entreaty, wish, etc: O God!, O for the wings of a dove!
abbreviation
1.
out of stock
2.
(banking) outstanding

interjection of fear, surprise, admiration, etc.; see oh.

blood type, 1926, originally “zero,” denoting absence of A and B agglutinogens.

os 1 (ŏs)
n. pl. o·ra (ôr’ə)

os 2 (ŏs)
n. pl. os·sa (ŏs’ə)
Bone.

Os
The symbol for the element osmium.

OS abbr.
Latin oculus sinister (left eye)

o
The Greek letter omicron. Entries beginning with this character are alphabetized under omicron.

O 1

The symbol for the element oxygen.

O 2
abbr.
oculus
Os
The symbol for osmium.
O
The symbol for oxygen.
osmium
(ŏz’mē-əm)
Symbol Os
A hard, brittle, bluish-white metallic element that is the densest naturally occurring element. It is used to make very hard alloys for fountain pen points, electrical contacts, and instrument pivots. Atomic number 76; atomic weight 190.2; melting point 3,000°C; boiling point 5,000°C; specific gravity 22.57; valence 2, 3, 4, 8. See Periodic Table.

1. operating system.
2. [obsolete, ITS], an output spy. See “OS and JEDGAR”.
3. An operating system from IBM for their System/360 line of hardware announced in 1964. OS was planned with several flavours that were supposed to be compatible. OS was late, memory hungry and not able to reach the marketing objectives of IBM for the 360/30, the planned successor of the IBM 1401. IBM then decided to design a new operating system for the low end machines which they called DOS/360.
[Jargon File]
(1997-09-22)
osmium
1.
offscreen
2.
Old Saxon
3.
Old Style (calendar)
4.
operating system
5.
ordinary seaman
6.
out of stock
1.
Latin octarius (pint)
2.
octavo
3.
ohm
1.
old
2.
Oriental (as in personal ads, but usually A, Asian)
3.
out
4.
outstanding
1.
Latin oculus sinister (left eye)
2.
old series
3.
out of stock