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Noun os has 5 senses
  1. os - a mouth or mouthlike opening
    --1 is a kind of
    orifice, opening, porta
  2. osmium, Os, atomic number 76 - a hard brittle blue-gray or blue-black metallic element that is one of the platinum metals; the heaviest metal known
    --2 is a kind of metallic element, metal
  3. operating system, OS - (computer science) software that controls the execution of computer programs and may provide various services
    --3 is a kind of software, software system, software package, package
    --3 is a part of platform
    --3 has parts: supervisory program, supervisor, executive program
    --3 has particulars:
     DOS, disk operating system; UNIX, UNIX system, UNIX operating system
  4. oculus sinister, OS - the left eye
    --4 is a kind of eye, oculus, optic
  5. bone, os - rigid connective tissue that makes up the skeleton of vertebrates
    --5 is a kind of connective tissue
    --5 is a part of endoskeleton
    --5 is a substance of horn
    --5 has parts:
     socket; marrow, bone marrow; lamella; bone cell; condyle; coronoid process, processus coronoideus; matrix, intercellular substance, ground substance
    --5 has substances: collagen; bone, osseous tissue
    --5 has particulars:
     furcula; splint bone; pastern, fetter bone; cannon bone; fishbone; anklebone, astragal, astragalus, talus; bare bone; cuboid bone; carpal bone, carpal, wrist bone; cartilage bone; centrum; cheekbone, zygomatic bone, mala, malar bone, jugal bone, os zygomaticum; clavicle, collarbone; coccyx, tail bone; dentine, dentin; ethmoid, ethmoid bone; heelbone, calcaneus, os tarsi fibulare; hipbone, innominate bone; hyoid, hyoid bone, os hyoideum; ilium; ischium, ischial bone, os ischii; long bone, os longum; ramus; membrane bone; metacarpal, metacarpal bone; metatarsal; nasal, nasal bone, os nasale; ossicle, bonelet, ossiculum; palatine, palatine bone, os palatinum; phalanx; pubis, pubic bone, os pubis; rib, costa; round bone; sacrum; scapula, shoulder blade, shoulder bone; sesamoid bone, os sesamoideum; short bone, os breve; sphenoid bone, sphenoid, os sphenoidale; sternum, breastbone; gladiolus, corpus sternum; manubrium; xiphoid process; tarsal, tarsal bone; temporal bone, os temporale; tooth; turbinate bone, turbinate, turbinal; tympanic bone; vertebra; zygoma, zygomatic arch, arcus zygomaticus; modiolus; lacrimal bone; skull; calvaria, skullcap; cranium, braincase, brainpan; occiput; sinciput; jaw; vomer; Wormian bone, sutural bone; marrowbone
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