os is the dictionary form of ora Definition of os
ora
1. [ noun ] (anatomy,zoology) a mouth or mouthlike opening
Related terms: orifice
2. [ noun ] (chemistry) a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals; the heaviest metal known
Synonyms: atomic_number_76 osmium
Related terms: metallic_element
3. [ noun ] (computer science) software that controls the execution of computer programs and may provide various services
Synonyms: operating_system
Related terms: software UNIX DOS platform supervisory_program computer_science
4. [ noun ] (zoology,ophthalmology) the left eye
Synonyms: oculus_sinister
Related terms: eye
5. [ noun ] (zoology) rigid connective tissue that makes up the skeleton of vertebrates
Synonyms: bone
Related terms: connective_tissue tooth jaw short_bone skull long_bone phalanx scapula rib round_bone lower_jaw turbinate_bone cheekbone sternum marrowbone heelbone cuboid_bone furcula pastern ilium baculum lacrimal_bone ischium tarsal cartilage_bone upper_jaw membrane_bone centrum cannon_bone vertebra ethmoid sacrum hipbone sesamoid_bone bare_bone carpal_bone sphenoid_bone metacarpal gladiolus manubrium fishbone temporal_bone splint_bone ossicle tympanic_bone sutural_bone vomer zygoma metatarsal palatine nasal clavicle cranium coccyx sinciput calvaria pubis occiput dentine anklebone hyoid modiolus xiphoid_process ramus endoskeleton marrow coronoid_process socket condyle bone_cell lamella matrix horn bone collagen
Similar spelling:   or
  Oriya
  Ory
  orr
  ore
  oreo
  Ohora