os(redirected from os trigonum)
Also found in: Thesaurus, Medical, Encyclopedia.
The symbol for osmium.
1. or O/S Old Style
2. operating system
3. ordinary seaman
n. pl. o·ra (ôr′ə)
A mouth or an opening.
n. pl. os·sa (ŏs′ə)
n. pl. os·ar (ō′sär′)
[Swedish ås, ridge, from Old Norse āss.]
n, pl ossa (ˈɒsə)
(Anatomy) anatomy the technical name for bone
[C16: from Latin: bone; compare Greek osteon]
n, pl ora (ˈɔːrə)
(Anatomy) anatomy zoology a mouth or mouthlike part or opening
[C18: from Latin]
n, pl osar (ˈəʊsɑː)
(Geological Science) another name for esker
[C19 osar (pl), from Swedish ås (sing) ridge]
the chemical symbol for
(Elements & Compounds) osmium
1. (Education) Old School
2. (Physical Geography) Old Style (method of reckoning dates)
3. (Nautical Terms) Ordinary Seaman
4. (Surveying) (in Britain) Ordnance Survey
6. (Languages) Old Saxon (language)
n., pl. os•sa (ˈɒs ə)
[1540–50; < Latin]
n., pl. o•ra (ˈɔr ə, ˈoʊr ə)
a mouth or orifice of the body.
[1730–40; < Latin ōs mouth]
1. Old Saxon.
2. Computers. operating system.
1. (in prescriptions) the left eye.
[< Latin oculus sinister]
2. old series.
3. ordinary seaman.
The symbol for osmium.
Switch to new thesaurus
|Noun||1.||os - a mouth or mouthlike opening|
|2.||Os - a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known|
|3.||OS - (computer science) software that controls the execution of computer programs and may provide various services|
platform - the combination of a particular computer and a particular operating system
computer science, computing - the branch of engineering science that studies (with the aid of computers) computable processes and structures
software, software package, software program, software system, computer software, package - (computer science) written programs or procedures or rules and associated documentation pertaining to the operation of a computer system and that are stored in read/write memory; "the market for software is expected to expand"
executive program, supervisory program, supervisor - a program that controls the execution of other programs
Windows - (trademark) an operating system with a graphical user interface
|4.||OS - the left eye|
|5.||os - rigid connective tissue that makes up the skeleton of vertebrates|
horn - one of the bony outgrowths on the heads of certain ungulates
furcula - a forked bone formed by the fusion of the clavicles of most birds
splint bone - a rudimentary metacarpal or metatarsal bone on either side of the cannon bone in the leg of a horse or related animal
cannon bone - greatly developed metatarsal or metacarpal bone in the shank or cannon part of the leg in hoofed mammals
fishbone - a bone of a fish
anklebone, astragal, astragalus, talus - the bone in the ankle that articulates with the leg bones to form the ankle joint
bare bone - bone stripped of flesh
cuboid bone - the cube shaped bone on the outer side of the tarsus
cartilage bone - any bone that develops within cartilage rather than a fibrous tissue
centrum - the main body of a vertebra
cheekbone, jugal bone, malar, malar bone, os zygomaticum, zygomatic, zygomatic bone - the arch of bone beneath the eye that forms the prominence of the cheek
ethmoid, ethmoid bone - one of the eight bones of the cranium; a small bone filled with air spaces that forms part of the eye sockets and the nasal cavity
hipbone, innominate bone - large flaring bone forming one half of the pelvis; made up of the ilium and ischium and pubis
hyoid, hyoid bone, os hyoideum - a U-shaped bone at the base of the tongue that supports the tongue muscles
ilium - the upper and widest of the three bones making up the hipbone
ischial bone, ischium, os ischii - one of the three sections of the hipbone; situated below the ilium
ramus - the posterior part of the mandible that is more or less vertical
membrane bone - any bone that develops within membranous tissue without previous cartilage formation; e.g. the clavicle and bones of the skull
metatarsal - any bone of the foot between the ankle and the toes
os palatinum, palatine bone, palatine - either of two irregularly shaped bones that form the back of the hard palate and helps to form the nasal cavity and the floor of the orbits
phalanx - any of the bones of the fingers or toes
os pubis, pubic bone, pubis - one of the three sections of the hipbone; together these two bones form the front of the pelvis
costa, rib - any of the 12 pairs of curved arches of bone extending from the spine to or toward the sternum in humans (and similar bones in most vertebrates)
round bone - bones that are round in shape
sacrum - wedge-shaped bone consisting of five fused vertebrae forming the posterior part of the pelvis; its base connects with the lowest lumbar vertebra and its tip with the coccyx
scapula, shoulder blade, shoulder bone - either of two flat triangular bones one on each side of the shoulder in human beings
os sesamoideum, sesamoid, sesamoid bone - any of several small round bones formed in a tendon where it passes over a joint
socket - a bony hollow into which a structure fits
breastbone, sternum - the flat bone that articulates with the clavicles and the first seven pairs of ribs
manubrium - the upper part of the breastbone
xiphoid process - smallest of the three parts of the breastbone; articulates with the corpus sternum and the seventh rib
n. L. os, hueso.