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ora

1
[awr-uh, ohr-uh]
noun
  1. plural of os2.
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ora

2
[awr-uh, ohr-uh]
noun, plural o·ras, o·rae [awr-ee, ohr-ee] /ˈɔr i, ˈoʊr i/.
  1. a money of account of Anglo-Saxon England, introduced by the Danes and equal to about two shillings.
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Origin of ora

2
before 950; < Old English ōra < Old Norse plural aurar monetary unit < Latin aureus aureus

os

1
[os]
noun, plural os·sa [os-uh] /ˈɒs ə/.
  1. Anatomy, Zoology. a bone.
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Origin of os

1
Borrowed into English from Latin around 1540–50

os

2
[os]
noun, plural o·ra [awr-uh, ohr-uh] /ˈɔr ə, ˈoʊr ə/.
  1. Anatomy, Zoology. a mouth or orifice of the body.
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Origin of os

2
First recorded in 1730–40, os is from the Latin word ōs mouth

os

3
[ohs]
noun, plural o·sar [oh-sahr] /ˈoʊ sɑr/.
  1. Geology. an esker, especially when of great length.
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Origin of os

3
< Swedish ås (plural åsar) ridge

ora pro nobis

[awr-ah proh noh-bis, ohr-ah]
Latin.
  1. pray for us.
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Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for ora

ora

noun
  1. the plural of os 2
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ora pro nobis

  1. a Latin invocation meaning pray for us
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Os

the chemical symbol for
  1. osmium
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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)
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os

1
noun plural ossa (ˈɒsə)
  1. anatomy the technical name for bone
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Word Origin for os

C16: from Latin: bone; compare Greek osteon

os

2
noun plural ora (ˈɔːrə)
  1. anatomy zoology a mouth or mouthlike part or opening
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Word Origin for os

C18: from Latin

os

3
noun plural osar (ˈəʊsɑː)
  1. another name for esker
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Word Origin for os

C19 osar (pl), from Swedish ås (sing) ridge
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

ora in Medicine

ora

(ôrə)
n. pl. o•rae (ôrē)
  1. An edge or margin.
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Os

  1. The symbol for the elementosmium
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OS

abbr.
  1. oculus sinister (left eye)
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The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

ora in Science

Os

  1. The symbol for osmium.
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The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.