os

Type of:

opening, orifice, porta

an aperture or hole that opens into a bodily cavity

Synonyms:

bone

Types:

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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

fetter bone, pastern

the part between the fetlock and the hoof

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

carpal, carpal bone, wrist bone

any of the eight small bones of the wrist of primates

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

clavicle, collarbone

bone linking the scapula and sternum

coccyx, tail bone

the end of the vertebral column in humans and tailless apes

dentin, dentine

bone (calcified tissue) surrounding the pulp cavity of a tooth

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

calcaneus, heelbone, os tarsi fibulare

the largest tarsal bone; forms the human heel

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

long bone, os longum

in limbs of vertebrate animals: a long cylindrical bone that contains marrow

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

metacarpal, metacarpal bone

any bone of the hand between the wrist and fingers

metatarsal

any bone of the foot between the ankle and the toes

nasal, nasal bone, os nasale

an elongated rectangular bone that forms the bridge of the nose

bonelet, ossicle, ossiculum

a small bone; especially one in the middle ear

os palatinum, palatine, palatine bone

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

os breve, short bone

a bone that is of approximately equal dimension in all directions

os sphenoidale, sphenoid, sphenoid bone

butterfly-shaped bone at the base of the skull

breastbone, sternum

the flat bone that articulates with the clavicles and the first seven pairs of ribs

corpus sternum, gladiolus

the large central part of the breastbone

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

tarsal, tarsal bone

any bone of the tarsus

os temporale, temporal bone

a thick bone forming the side of the human cranium and encasing the inner ear

tooth

hard bonelike structures in the jaws of vertebrates; used for biting and chewing or for attack and defense

turbinal, turbinate, turbinate bone

any of the scrolled spongy bones of the nasal passages in man and other vertebrates

tympanic bone

the bone enclosing the middle ear

vertebra

one of the bony segments of the spinal column

arcus zygomaticus, zygoma, zygomatic arch

the slender arch formed by the temporal process of the cheekbone that bridges to the zygomatic process of the temporal bone

modiolus

the central conical bony pillar of the cochlea

lacrimal bone

small fragile bone making up part of the front inner walls of each eye socket and providing room for the passage of the lacrimal ducts

skull

the bony skeleton of the head of vertebrates

calvaria, skullcap

the dome of the skull

braincase, brainpan, cranium

the part of the skull that encloses the brain

occiput

back part of the head or skull

sinciput

the front part of the head or skull (including the forehead)

jaw

the part of the skull of a vertebrate that frames the mouth and holds the teeth

vomer

thin trapezoidal bone of the skull forming the posterior and inferior parts of the nasal septum

Wormian bone, sutural bone

any of the tiny soft bones found in the sutures between cranial bones

marrowbone

a bone containing edible marrow; used especially in flavoring soup

fang

hollow or grooved tooth of a venomous snake; used to inject its poison

tusk

a long pointed tooth specialized for fighting or digging; especially in an elephant or walrus or hog

conodont

the tiny fossil cone-shaped tooth of a primitive vertebrate of order Conodonta

wishbone, wishing bone

the furcula of a domestic fowl

nasal concha

one of several turbinate bones in the nasal cavity

navicular, os scaphoideum, scaphoid bone

the largest wrist bone on the thumb side

lunate bone, os lunatum, semilunar bone

one of the eight small wrist bones

cuneiform bone, os triquetrum, pyramidal bone, triquetral, triquetral bone

a wrist bone that articulates with the pisiform and hamate and lunate bones

os pisiforme, pisiform, pisiform bone

a small wrist bone that articulates only with the triquetral

os trapezium, trapezium, trapezium bone

the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals

os trapezoideum, trapezoid, trapezoid bone

the wrist bone between the trapezium and the capitate bones

capitate, capitate bone, os capitatum

the wrist bone with a rounded head shape that articulates with the 3rd metacarpus

hamate, hamate bone, os hamatum, unciform bone

the wrist bone in line with the 4th and 5th fingers

jawbone, jowl, lower jaw, lower jawbone, mandible, mandibula, mandibular bone, submaxilla

the jaw in vertebrates that is hinged to open the mouth

auditory ossicle

ossicles of the middle ear that transmit acoustic vibrations from the eardrum to the inner ear

kneecap, kneepan, patella

a small flat triangular bone in front of the knee that protects the knee joint

chopper, pearly

informal terms for a human `tooth'

carnassial tooth

the last upper premolar and first lower molar teeth of a carnivore; having sharp edges for cutting flesh

maxilla, maxillary, upper jaw, upper jawbone

the jaw in vertebrates that is fused to the cranium

anterior, front tooth

a tooth situated at the front of the mouth

back tooth, posterior

a tooth situated at the back of the mouth

malposed tooth

a tooth that has grown in a faulty position

adult tooth, permanent tooth

any of the 32 teeth that replace the deciduous teeth of early childhood and (with luck) can last until old age

baby tooth, deciduous tooth, milk tooth, primary tooth

one of the first temporary teeth of a young mammal (one of 20 in children)

canine, canine tooth, cuspid, dogtooth, eye tooth, eyetooth

one of the four pointed conical teeth (two in each jaw) located between the incisors and the premolars

bicuspid, premolar

a tooth having two cusps or points; located between the incisors and the molars

incisor

a tooth for cutting or gnawing; located in the front of the mouth in both jaws

grinder, molar

grinding tooth with a broad crown; located behind the premolars

forehead, frontal bone, os frontale

the large cranial bone forming the front part of the cranium: includes the upper part of the orbits

parietal bone

either of two skull bones between the frontal and occipital bones and forming the top and sides of the cranium

occipital bone

a saucer-shaped membrane bone that forms the back of the skull

chop

a jaw

cervical vertebra, neck bone

one of 7 vertebrae in the human spine located in the neck region

dorsal vertebra, thoracic vertebra

one of 12 vertebrae in the human vertebral column; thoracic vertebrae extend from the seventh cervical vertebra down to the first lumbar vertebra

lumbar vertebra

one of 5 vertebrae in the human vertebral column; lumbar vertebrae extend from the twelfth thoracic vertebra down to the sacral vertebrae

sacral vertebra

one of 5 vertebrae in the human spine that fuse in the adult to form the sacrum

caudal vertebra, coccygeal vertebra

one of 4 vertebrae in the human coccyx

true rib

one of the first seven ribs in a human being which attach to the sternum

epiphysis

the end of a long bone; initially separated from the main bone by a layer of cartilage that eventually ossifies so the parts become fused

diaphysis, shaft

the main (mid) section of a long bone

arm bone

a bone in the arm

leg bone

a bone of the leg

Type of:

connective tissue

tissue of mesodermal origin consisting of e.g. collagen fibroblasts and fatty cells; supports organs and fills spaces between them and forms tendons and ligaments