1. (historical) a money of account among the Anglo-Saxons, valued, in the Domesday Book, at twenty pence sterling

1. A mouth or mouthlike opening

1. Rigid connective tissue that makes up the skeleton of vertebrates
   - bone

1. (computer science) software that controls the execution of computer programs and may provide various services
   - operating system 
2. The left eye
   - oculus sinister

1. A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known
   - osmium, atomic number 76

Sounds like: aura

Derived forms: oras

Type of: computer software, connective tissue, eye, metal, metallic element, oculus, opening, optic, orifice, package, porta, software, software package, software program, software system

Part of: endoskeleton, horn, platform

Encyclopedia: OS

• genus Tragopogon
• genus Tragulus
• genus Trapa
• genus Trautvetteria
• genus Trema
• genus Tremella
• genus Treponema
• genus Triaenodon
• genus Trialeurodes
• genus Triatoma
• genus Tribolium
• genus Tribonema
• genus Tribulus
• genus Triceratops
• genus Trichecus
• genus Trichoceros
• genus Trichodesmium
• genus Trichoglossus
• genus Tricholoma
• genus Trichomanes
• genus Trichomonas
• genus Trichophaga
• genus Trichophyton
• genus Trichostema
• genus Trichostigma