Definition of Os

1. Noun. A mouth or mouthlike opening.

Generic synonyms: Opening, Orifice, Porta

2. Noun. A hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known.
Exact synonyms: Atomic Number 76, Osmium
Generic synonyms: Metal, Metallic Element

3. Noun. (computer science) software that controls the execution of computer programs and may provide various services.

4. Noun. The left eye.
Exact synonyms: Oculus Sinister
Generic synonyms: Eye, Oculus, Optic

5. Noun. Rigid connective tissue that makes up the skeleton of vertebrates.
Exact synonyms: Bone
Substance meronyms: Horn
Specialized synonyms: 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
Terms within: Socket, Bone Marrow, Marrow, Lamella, Bone Cell, Condyle, Coronoid Process, Processus Coronoideus, Ground Substance, Intercellular Substance, Matrix
Generic synonyms: Connective Tissue
Terms within: Collagen, Bone, Osseous Tissue
Group relationships: Endoskeleton
Derivative terms: Bonelet, Boney, Bony, Bony

Definition of Os

1. n. A bone.

2. n. A mouth; an opening; an entrance.

3. n. One of the ridges of sand or gravel found in Sweden, etc., supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar.

Definition of Os

1. Initialism. Ordnance Survey ¹

2. Initialism. (software) operating system ¹

3. Initialism. oculus sinister — left eye ¹

4. Initialism. outsize ¹

5. Initialism. Old Style; a term used in English language historical studies to indicate that a date conforms to the Julian calendar instead of the modern Gregorian calendar ¹

6. Noun. (U.K.) an Ordnance Survey map. ¹

7. Noun. (rare medicine) Bone. ¹

8. Noun. (rare) A mouth; an opening. ¹

9. Noun. In particular, either end of the cervix, internal (to the uterus) or external (to the vagina). ¹

¹ Source: wiktionary.com

Definition of Os

1. an orifice [n OSAR] / a bone [n OSSA] - See also: orifice

Medical Definition of Os

1. Origin: Sw. As ridge, chain of hills, pl. Asar. One of the ridges of sand or gravel found in Sweden, etc, supposed by some to be of marine origin, but probably formed by subglacial waters. The osar are similar to the kames of Scotland and the eschars of Ireland. See Eschar. Source: Websters Dictionary (01 Mar 1998)

Os Pictures

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Lexicographical Neighbors of Os

oryctological
oryctologist
oryctologists
oryctology
oryx
oryxes
oryza
oryzalin
oryzanol
oryzias
oryzivorous
oryzomyine
oryzomyines
orzo
orzos
os acromiale
os basilare
os breve
os calcis
os capitatum
os centrale
os centrale tarsi
os coccygis
os costale
os cuboideum
os cuneiforme intermedium

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