ossa

ossa

[os-uh]
noun
plural of os1.
Dictionary.com Unabridged

Ossa

[os-uh]
noun
a mountain in E Greece, in Thessaly. 6490 feet (1978 meters).

os

1 [os]
noun, plural ossa [os-uh] .
Anatomy, Zoology. a bone.

Origin:
1540–50; < Latin

os

2 [os] .
noun, plural ora [awr-uh, ohr-uh] .
Anatomy, Zoology. a mouth or orifice of the body.

Origin:
1730–40; < Latin ōs mouth

os

3 [ohs] .
noun, plural osar [oh-sahr] .
Geology. an esker, especially when of great length.

Origin:
< Swedish ås (plural åsar) ridge

Dictionary.com Unabridged
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World English Dictionary
os1 (ɒs)
 
n , pl ossa
anatomy the technical name for bone
 
[C16: from Latin: bone; compare Greek osteon]

os2 (ɒs)
 
n , pl ora
anatomy, zoology a mouth or mouthlike part or opening
 
[C18: from Latin]

os3 (əʊs)
 
n , pl osar
another name for esker
 
[C19 osar (pl), from Swedish ås (sing) ridge]

Os
 
the chemical symbol for
osmium

OS
 
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)

ossa (ˈɒsə)
 
n
the plural of os

Ossa (ˈɒsə)
 
n
a mountain in NE Greece, in E Thessaly: famous in mythology for the attempt of the twin giants, Otus and Ephialtes, to reach heaven by piling Ossa on Olympus and Pelion on Ossa. Height: 1978 m (6489 ft)

Collins English Dictionary - Complete & Unabridged 10th Edition
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American Heritage
Medical Dictionary

os 1 (ŏs)
n. pl. o·ra (ôr'ə)

  1. An opening into a hollow organ or canal.

  2. The oral cavity; mouth.

os 2 (ŏs)
n. pl. os·sa (ŏs'ə)
Bone.

Os
The symbol for the element osmium.

OS abbr.
Latin oculus sinister (left eye)

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
Os  
The symbol for osmium.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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American Heritage
Abbreviations & Acronyms
Os
osmium
OS
  1. offscreen

  2. Old Saxon

  3. Old Style (calendar)

  4. operating system

  5. ordinary seaman

  6. out of stock

OSSA
Office of Space Science and Applications
The American Heritage® Abbreviations Dictionary, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Encyclopedia Britannica
Encyclopedia

ossa

mountain massif, nomos (department) of Larissa, eastern Thessaly, Greece. It lies on the Gulf of Thermai and is separated on the north from the Olympus massif by the Vale of Tempe (Tembi). Rising from a broad, steep-sided plateau to a pyramidal peak of 6,489 feet (1,978 m), the mountain is noted in mythology for the attempt of the Aloads, sons of the sea god Poseidon, to climb to heaven by placing Ossa on Olympus and the Pelion mountains on Ossa.

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Encyclopedia Britannica, 2008. Encyclopedia Britannica Online.
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