Os

Symbol for osmium.

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left eye [Lat. oculus sinister]; object oriented; occipitosacral; occupational safety; office surgery; oligosaccharide; Omenn syndrome; opening snap; open source; open splenectomy; operating system; Opitz syndrome; oral surgery; ordinal scale; organspecific; orthognathic surgery; orthopedic surgeon, orthopedic surgery; Osgood-Schlatter [disease]; osteogenic sarcoma; osteosarcoma; osteosclerosis; ouabain sensitivity; overall survival; oxygen saturation

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OS abbr [Latin oculus sinister] left eye used in writing prescriptions

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Ⅰ. n. (pl. ora)

the mouth or a mouthlike part.

 

Ⅱ. n. (pl. ossa)

a bone.

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[L.] oґculus sinisґter (left eye).