os

Noun os has 5 senses

• os(n = noun.body) - a mouth or mouthlike opening;
is a kind of opening, orifice, porta

• os(n = noun.substance) atomic number 76, osmium - a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known;
is a kind of metal, metallic element

• os(n = noun.communication) operating system - (computer science) software that controls the execution of computer programs and may provide various services;
is a part of platform
is a kind of computer software, package, software, software package, software program, software system
has particulars: disk operating system, dos, unix, unix operating system, unix system, windows
has parts: executive program, supervisor, supervisory program

• os(n = noun.body) oculus sinister - the left eye;
is a kind of eye, oculus, optic

• os(n = noun.body) bone - rigid connective tissue that makes up the skeleton of vertebrates;
has particulars: furcula, splint bone, fetter bone, pastern, cannon bone, fishbone, anklebone, astragal, astragalus, talus, bare bone, cuboid bone, carpal, carpal bone, wrist bone, cartilage bone, centrum, cheekbone, jugal bone, malar, malar bone, os zygomaticum, zygomatic, zygomatic bone, clavicle, collarbone, coccyx, tail bone, dentin, dentine, ethmoid, ethmoid bone, calcaneus, heelbone, os tarsi fibulare, hipbone, innominate bone, hyoid, hyoid bone, os hyoideum, ilium, ischial bone, ischium, os ischii, long bone, os longum, ramus, membrane bone, metacarpal, metacarpal bone, metatarsal, nasal, nasal bone, os nasale, bonelet, ossicle, ossiculum, os palatinum, palatine, palatine bone, phalanx, os pubis, pubic bone, pubis, costa, rib, round bone, sacrum, scapula, shoulder blade, shoulder bone, os sesamoideum, sesamoid, sesamoid bone, os breve, short bone, os sphenoidale, sphenoid, sphenoid bone, breastbone, sternum, corpus sternum, gladiolus, manubrium, xiphoid process, tarsal, tarsal bone, os temporale, temporal bone, tooth, turbinal, turbinate, turbinate bone, tympanic bone, vertebra, arcus zygomaticus, zygoma, zygomatic arch, modiolus, lacrimal bone, skull, calvaria, skullcap, braincase, brainpan, cranium, occiput, sinciput, jaw, vomer, sutural bone, wormian bone, marrowbone
has parts: socket, bone marrow, marrow, lamella, bone cell, condyle, coronoid process, processus coronoideus, ground substance, intercellular substance, matrix
is a kind of connective tissue
is a part of endoskeleton