[awr-uh, ohr-uh] 
[awr-ee, ohr-ee] . | a money of account of Anglo-Saxon England, introduced by the Danes and equal to about two shillings. |
[os] [os-uh] . | Anatomy, Zoology. a bone. |
[os] [awr-uh, ohr-uh] . | Anatomy, Zoology. a mouth or orifice of the body. |
[ohs] [oh-sahr] . | Geology. an esker, esp. when of great length. |
| o·ra (ôr'ə, ōr'ə) n. Plural of os1. |
| os 1 (ŏs) n. pl. o·ra (ôr'ə, ōr'ə) A mouth or an opening. [Latin ōs, mouth; see ōs- in Indo-European roots.] |
ora o·ra (ôr'ə)
n. pl. o·rae (ôr'ē)
An edge or margin.
OS abbr.
Latin oculus sinister (left eye)
| osmium (ŏz'mē-əm) Pronunciation Key
Symbol Os A hard, brittle, bluish-white metallic element that is the densest naturally occurring element. It is used to make very hard alloys for fountain pen points, electrical contacts, and instrument pivots. Atomic number 76; atomic weight 190.2; melting point 3,000°C; boiling point 5,000°C; specific gravity 22.57; valence 2, 3, 4, 8. See Periodic Table. |
| ORA Orthopaedic Rehabilitation Association |