os

Os

The symbol for osmium.

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OS

abbr.

1. or O/S Old Style

2. operating system

3. ordinary seaman

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os ¹

 (ōs)

n. pl. o·ra (ôr′ə)

A mouth or an opening.

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[Latin ōs, mouth; see ōs- in Indo-European roots.]

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os ²

 (ŏs)

n. pl. os·sa (ŏs′ə)

A bone.

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[Latin, bone; see ost- in Indo-European roots.]

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os ³

 (ōs)

n. pl. os·ar (ō′sär′)

See esker.

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[Swedish ås, ridge, from Old Norse āss.]

American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

os

(ɒs)

n, pl ossa (ˈɒsə)

(Anatomy) anatomy the technical name for bone

[C16: from Latin: bone; compare Greek osteon]

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os

(ɒs)

n, pl ora (ˈɔːrə)

(Anatomy) anatomy zoology a mouth or mouthlike part or opening

[C18: from Latin]

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os

(əʊs)

n, pl osar (ˈəʊsɑː)

(Geological Science) another name for esker

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

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Os

the chemical symbol for

(Elements & Compounds) osmium

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OS

abbreviation for

1. (Education) Old School

2. (Physical Geography) Old Style (method of reckoning dates)

3. (Nautical Terms) Ordinary Seaman

4. (Surveying) (in Britain) Ordnance Survey

5. outsize

6. (Languages) Old Saxon (language)

Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014

os¹

(ɒs)

n., pl. os•sa (ˈɒs ə)

a bone.

[1540–50; < Latin]

os²

(ɒs)

n., pl. o•ra (ˈɔr ə, ˈoʊr ə)

a mouth or orifice of the body.

[1730–40; < Latin ōs mouth]

OS

1. Old Saxon.

2. Computers. operating system.

Os

Chem. Symbol.

osmium.

O.S.

1. (in prescriptions) the left eye.

[< Latin oculus sinister]

2. old series.

3. ordinary seaman.

Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.

Os

The symbol for osmium.

The American Heritage® Student Science Dictionary, Second Edition. Copyright © 2014 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Thesaurus

Noun	1.	os - a mouth or mouthlike opening   orifice, porta, opening - an aperture or hole that opens into a bodily cavity; "the orifice into the aorta from the lower left chamber of the heart"
	2.	Os - a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known atomic number 76, osmium metal, metallic element - any of several chemical elements that are usually shiny solids that conduct heat or electricity and can be formed into sheets etc.
	3.	OS - (computer science) software that controls the execution of computer programs and may provide various services operating system platform - the combination of a particular computer and a particular operating system computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures software, software package, software program, software system, computer software, package - (computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory; "the market for software is expected to expand" disk operating system, DOS - an operating system that is on a disk UNIX, UNIX operating system, UNIX system - trademark for a powerful operating system executive program, supervisory program, supervisor - a program that controls the execution of other programs Windows - (trademark) an operating system with a graphical user interface
	4.	OS - the left eye oculus sinister eye, oculus, optic - the organ of sight
	5.	os - rigid connective tissue that makes up the skeleton of vertebrates bone horn - one of the bony outgrowths on the heads of certain ungulates furcula - a forked bone formed by the fusion of the clavicles of most birds splint bone - a rudimentary metacarpal or metatarsal bone on either side of the cannon bone in the leg of a horse or related animal fetter bone, pastern - the part between the fetlock and the hoof cannon bone - greatly developed metatarsal or metacarpal bone in the shank or cannon part of the leg in hoofed mammals fishbone - a bone of a fish anklebone, astragal, astragalus, talus - the bone in the ankle that articulates with the leg bones to form the ankle joint bare bone - bone stripped of flesh cuboid bone - the cube shaped bone on the outer side of the tarsus carpal, carpal bone, wrist bone - any of the eight small bones of the wrist of primates cartilage bone - any bone that develops within cartilage rather than a fibrous tissue centrum - the main body of a vertebra cheekbone, jugal bone, malar, malar bone, os zygomaticum, zygomatic, zygomatic bone - the arch of bone beneath the eye that forms the prominence of the cheek clavicle, collarbone - bone linking the scapula and sternum coccyx, tail bone - the end of the vertebral column in humans and tailless apes dentin, dentine - bone (calcified tissue) surrounding the pulp cavity of a tooth ethmoid, ethmoid bone - one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity calcaneus, heelbone, os tarsi fibulare - the largest tarsal bone; forms the human heel hipbone, innominate bone - large flaring bone forming one half of the pelvis; made up of the ilium and ischium and pubis hyoid, hyoid bone, os hyoideum - a U-shaped bone at the base of the tongue that supports the tongue muscles ilium - the upper and widest of the three bones making up the hipbone ischial bone, ischium, os ischii - one of the three sections of the hipbone; situated below the ilium long bone, os longum - in limbs of vertebrate animals: a long cylindrical bone that contains marrow ramus - the posterior part of the mandible that is more or less vertical membrane bone - any bone that develops within membranous tissue without previous cartilage formation; e.g. the clavicle and bones of the skull metacarpal, metacarpal bone - any bone of the hand between the wrist and fingers metatarsal - any bone of the foot between the ankle and the toes nasal bone, os nasale, nasal - an elongated rectangular bone that forms the bridge of the nose bonelet, ossicle, ossiculum - a small bone; especially one in the middle ear os palatinum, palatine bone, palatine - either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits phalanx - any of the bones of the fingers or toes os pubis, pubic bone, pubis - one of the three sections of the hipbone; together these two bones form the front of the pelvis costa, rib - any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates) round bone - bones that are round in shape sacrum - wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx scapula, shoulder blade, shoulder bone - either of two flat triangular bones one on each side of the shoulder in human beings os sesamoideum, sesamoid, sesamoid bone - any of several small round bones formed in a tendon where it passes over a joint os breve, short bone - a bone that is of approximately equal dimension in all directions socket - a bony hollow into which a structure fits os sphenoidale, sphenoid, sphenoid bone - butterfly-shaped bone at the base of the skull breastbone, sternum - the flat bone that articulates with the clavicles and the first seven pairs of ribs corpus sternum, gladiolus - the large central part of the breastbone manubrium - the upper part of the breastbone xiphoid process - smallest of the three parts of the breastbone; articulates with the corpus sternum and the seventh rib

Based on WordNet 3.0, Farlex clipart collection. © 2003-2012 Princeton University, Farlex Inc.

Translations

Os

Mat

OS

ABBR

1. (Brit) (Geog) =Ordnance Survey servicio oficial de topografía

2. (Brit) (Navy) =Ordinary Seaman

3. (Hist) =old style → según el calendario juliano

Collins Spanish Dictionary - Complete and Unabridged 8th Edition 2005 © William Collins Sons & Co. Ltd. 1971, 1988 © HarperCollins Publishers 1992, 1993, 1996, 1997, 2000, 2003, 2005

OS

[ˌəʊˈɛs] abbr

(British) (=Ordnance Survey) → IGN m(= Institut géographique national)

= ordinary seaman

= outsize

Collins English/French Electronic Resource. © HarperCollins Publishers 2005

OS

[ˌəʊˈɛs] abbr (Brit)

a. =Ordnance Survey → I.G.M. m =Istituto Geografico Militare

b. (Naut) = ordinary seaman

c. (clothes) = outsize

Collins Italian Dictionary 1st Edition © HarperCollins Publishers 1995

os

n. L. os, hueso.

English-Spanish Medical Dictionary © Farlex 2012