o.d

Dictionary.com Unabridged

O.D.

2
1.
Doctor of Optometry.
3.
Old Dutch.
4.
(of a military uniform) olive drab.
5.
ordinary seaman.
6.
outside diameter.
8.
overdrawn.

o.d.

1
(in prescriptions) the right eye.

Origin:
< Latin oculus dexter

o.d.

2
1.
olive drab.
2.
on demand.
3.
outside diameter.

officer of the day

noun Military.
an officer who has charge of the guard and prisoners on an assigned day at a military installation. Abbreviation: OD, O.D., O.O.D.

Origin:
1835–45

Old Dutch

noun
the Dutch language before c1100. Abbreviation: OD, OD., O.D.

ordinary seaman

noun
a seaman insufficiently skilled to be classified as an able-bodied seaman. Abbreviation: O.D., O.S., o.s.

Origin:
1695–1705

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Collins
World English Dictionary
officer of the day
 
n
Also called: orderly officer a military officer whose duty is to take charge of the security of the unit or camp for a day

Old Dutch
 
n
See also Franconian OD the Dutch language up to about 1100, derived from the Low Franconian dialect of Old Low German

ordinary seaman
 
n
a seaman of the lowest rank, being insufficiently experienced to be an able-bodied seaman

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

O.D.
abbreviation of overdose, attested from 1960.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Abbreviations & Acronyms
o.d.
  1. Latin oculus dexter (right eye)

  2. olive drab

  3. on demand

  4. outside diameter

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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