os

¹os

noun \ˈäs\

plural os·sa \ˈä-sə\

Definition of OS

: bone

Origin of OS

Latin oss-, os — more at osseous

First Known Use: 15th century

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

Rhymes with OS

boss, doss, dross, floss, fosse, gloss, joss, Kos, Maas, pross, stoss, toss

²os

noun \ˈōs\

plural ora \ˈȯr-ə\

Definition of OS

: orifice

Origin of OS

Latin or-, os — more at oral

First Known Use: 1737

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral

Rhymes with OS

Bose, close, dose, gross

Os

symbol

Definition of OS

osmium

Other Chemical Engineering Terms

alkali, cation, decant, hygroscopic, isotope, oxidize, slurry, solute, viscous

OS

abbreviation

Definition of OS

1

[Latin oculus sinister] left eye

2

Old Style

3

operating system

4

out of stock

Other Anatomy Terms

bilateral symmetry, carotid, cartilage, dorsal, entrails, prehensile, renal, solar plexus, supine, thoracic, ventral