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1

os

play
noun \ˈäs\

Definition of os

plural

ossa

play \ˈä-sə\
  1. :  bone



Origin and Etymology of os

Latin oss-, os — more at osseous


First Known Use: 15th century


2

os

play
noun \ˈōs\

Definition of os

plural

ora

play \ˈȯr-ə\
  1. :  orifice



Origin and Etymology of os

Latin or-, os — more at oral


First Known Use: 1737


Os

symbol

Definition of Os

  1. osmium



Other Chemical Engineering Terms


OS

abbreviation

Definition of OS

  1. 1 [Latin oculus sinister] left eye

  2. 2 Old Style

  3. 3 operating system

  4. 4 out of stock




Medical Dictionary

1

os

play
noun \ˈäs\

Medical Definition of os

plural

ossa

\ˈäs-ə\play



2

os

play
noun \ˈōs\

Medical Definition of os

plural

ora

\ˈōr-ə, ˈȯr-ə\play



Os

symbol

Medical Definition of Os

  1. osmium




OS

abbreviation

Medical Definition of OS

  1. left eye—used in writing prescriptions



Origin and Etymology of os

Latin oculus sinister


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