Antonyms
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1. os_hyoideum
noun. a U-shaped bone at the base of the tongue that supports the tongue muscles.
Synonyms
3. OS
noun. (computer science) software that controls the execution of computer programs and may provide various services.
Antonyms
4. Os
noun. a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known.