o.s.abbr.1. Latin oculus sinister (left eye)2. old series3. or o/s out of stockold stylen.1. Printing A style of type originating in the 1700s and characterized by slight contrast between light and heavy strokes and slanting serifs.2. Old Style Abbr. OS or O/S The method of reckoning dates according to the Julian calendar.os 1 (?s)n. pl. o·ra (ôr??) A mouth or an opening.[Latin ?s, mouth; see ?s- in Indo-European roots.]os 2 (?s)n. pl. os·sa (?s??) A bone.[Latin, bone; see ost- in Indo-European roots.]os 3 (?s)n. pl. os·ar (??sär?) See esker.[Swedish ås, ridge, from Old Norse ?ss.]OsThe symbol for osmium.OSabbr.1. or O/S Old Style2. operating system3. ordinary seamanAmerican 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.
o/s
o.s.
o.s.abbr.1. Latin oculus sinister (left eye)2. old series3. or o/s out of stockAmerican 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.o.s. , OS or O/Sabbreviation for1. (Commerce) out of stock2. (Banking & Finance) banking outstandingCollins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
O.S
O.abbr.1. ocean2. Ohioo.abbr.1. Latin octarius (pint)2. also O. octavoAmerican 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.