Dictionary and Thesaurus

Definition of Os

• (n.) A bone.
• (n.) A mouth; an opening; an entrance.
• (n.) One of the ridges of sand or gravel found in Sweden, etc., supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar.

Synonyms of Os

• Osmium
• Os
• Atomic Number 76
• Operating System
• OS
• Oculus Sinister
• OS
• Bone
• Oxygen
• O
• Atomic Number 8
• O
• O
• O
• Type O
• Group O

Antonyms of Os

Homophones of Os

• Aase