os | (noun) rigid connective tissue that makes up the skeleton of vertebrates | Synonyms: bone |
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(noun) a mouth or mouthlike opening | - |
oscheocele | (noun) swelling of the scrotum | Synonyms: oscheocoele |
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oscheocoele | (noun) swelling of the scrotum | Synonyms: oscheocele |
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oscillation | (noun) (physics) a regular periodic variation in value about a mean | Synonyms: vibration |
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(noun) a single complete execution of a periodically repeated phenomenon | Synonyms: cycle |
(noun) the process of oscillating between states | - |
oscillator | (noun) generator that produces sonic oscillations or alternating current | - |
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oscillogram | (noun) the recording produced by an oscillograph | - |
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oscillograph | (noun) a device for making a record of the wave forms of fluctuating voltages or currents | - |
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oscilloscope | (noun) electronic equipment that provides visual images of varying electrical quantities | Synonyms: cathode-ray oscilloscope, CRO, scope |
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oscine | (noun) passerine bird having specialized vocal apparatus | Synonyms: oscine bird |
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oscitance | (noun) an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom | Synonyms: oscitancy, yawn, yawning |
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(noun) drowsiness and dullness manifested by yawning | Synonyms: oscitancy |
oscitancy | (noun) an involuntary intake of breath through a wide open mouth; usually triggered by fatigue or boredom | Synonyms: oscitance, yawn, yawning |
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(noun) drowsiness and dullness manifested by yawning | Synonyms: oscitance |
osculation | (noun) the act of caressing with the lips (or an instance thereof) | Synonyms: buss, kiss |
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(noun) (mathematics) a contact of two curves (or two surfaces) at which they have a common tangent | - |
osculator | (noun) someone who kisses | Synonyms: kisser |
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osier | (noun) any of various willows having pliable twigs used in basketry and furniture | - |
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(noun) flexible twig of a willow tree | - |
osmiridium | (noun) a hard and corrosion resistant mineral that is a natural alloy of osmium and iridium (usually containing small amounts of rhodium and platinum); used in needles and pen nibs etc. | Synonyms: iridosmine |
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osmium | (noun) a hard brittle blue-grey or blue-black metallic element that is one of the platinum metals; the heaviest metal known | Synonyms: atomic number 76, Os |
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osmoreceptor | (noun) sensory end organ that responds to changes in osmotic pressure | - |
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osmosis | (noun) (biology, chemistry) diffusion of molecules through a semipermeable membrane from a place of higher concentration to a place of lower concentration until the concentration on both sides is equal | - |
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osmund | (noun) any fern of the genus Osmunda: large ferns with creeping rhizomes; naked sporangia are on modified fronds that resemble flower clusters | Synonyms: flowering fern |
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osprey | (noun) large harmless hawk found worldwide that feeds on fish and builds a bulky nest often occupied for years | Synonyms: fish eagle, fish hawk, Pandion haliaetus, sea eagle |
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ossicle | (noun) a small bone; especially one in the middle ear | Synonyms: bonelet, ossiculum |
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ossiculum | (noun) a small bone; especially one in the middle ear | Synonyms: bonelet, ossicle |
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ossification | (noun) hardened conventionality | Synonyms: conformity |
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(noun) the developmental process of bone formation | - |
(noun) the process of becoming rigidly fixed in a conventional pattern of thought or behavior | - |
(noun) the calcification of soft tissue into a bonelike material | - |
ossuary | (noun) any receptacle for the burial of human bones | - |
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osteitis | (noun) inflammation of a bone as a consequence of infection or trauma or degeneration | - |
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ostensibility | (noun) The quality of being professed, supposed rather than demonstrably true or real. | - |
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ostensorium | (noun) (Roman Catholic Church) a vessel (usually of gold or silver) in which the consecrated Host is exposed for adoration | Synonyms: monstrance |
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ostentation | (noun) pretentious or showy or vulgar display | - |
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(noun) lack of elegance as a consequence of being pompous and puffed up with vanity | Synonyms: inflation, ostentatiousness, pomposity, pompousness, pretentiousness, puffiness, splashiness |
(noun) a gaudy outward display | Synonyms: fanfare, flash |
ostentatiousness | (noun) lack of elegance as a consequence of being pompous and puffed up with vanity | Synonyms: inflation, ostentation, pomposity, pompousness, pretentiousness, puffiness, splashiness |
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osteoarthritis | (noun) chronic breakdown of cartilage in the joints; the most common form of arthritis occurring usually after middle age | Synonyms: degenerative arthritis, degenerative joint disease |
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osteoblast | (noun) a cell from which bone develops | Synonyms: bone-forming cell |
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osteoblastoma | (noun) benign tumor of bone and fibrous tissue; occurs in the vertebrae or femur or tibia or arm bones (especially in young adults) | - |
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osteochondroma | (noun) benign tumor containing both bone and cartilage; usually occurs near the end of a long bone | - |
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osteoclasis | (noun) treatment of a skeletal deformity by intentionally fracturing a bone | - |
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osteoclast | (noun) cell that functions in the breakdown and resorption of bone tissue | - |
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osteocyte | (noun) mature bone cell | - |
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osteodystrophy | (noun) defective bone development; usually attributable to renal disease or to disturbances in calcium and phosphorus metabolism | - |
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osteologer | (noun) an anatomist who is skilled in osteology | Synonyms: osteologist |
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osteologist | (noun) an anatomist who is skilled in osteology | Synonyms: osteologer |
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osteology | (noun) the branch of anatomy that studies the bones of the vertebrate skeleton | - |
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osteolysis | (noun) lysis of bone caused by disease or infection or inadequate blood supply | - |
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osteoma | (noun) a slow growing benign tumor of consisting of bone tissue; usually on the skull or mandible | - |
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osteomalacia | (noun) abnormal softening of bones caused by deficiencies of phosphorus or calcium or vitamin D | - |
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osteomyelitis | (noun) an inflammation of bone and bone marrow (usually caused by bacterial infection) | - |
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osteopath | (noun) a therapist who manipulates the skeleton and muscles | Synonyms: osteopathist |
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osteopathist | (noun) a therapist who manipulates the skeleton and muscles | Synonyms: osteopath |
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osteopathy | (noun) therapy based on the assumption that restoring health is best accomplished by manipulating the skeleton and muscles | - |
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osteopetrosis | (noun) an inherited disorder characterized by an increase in bone density; in severe forms the bone marrow cavity may be obliterated | Synonyms: Albers-Schonberg disease, marble bones disease |
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osteophyte | (noun) small abnormal bony outgrowth | - |
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osteoporosis | (noun) abnormal loss of bony tissue resulting in fragile porous bones attributable to a lack of calcium; most common in postmenopausal women | - |
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osteosarcoma | (noun) malignant bone tumor; most common in children and young adults where it tends to affect the femur | Synonyms: osteogenic sarcoma |
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osteosclerosis | (noun) abnormal hardening or eburnation of bone | - |
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osteostracan | (noun) extinct jawless fish of the Devonian with armored head | Synonyms: cephalaspid |
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osteotomy | (noun) surgical sectioning of bone | - |
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ostiarius | (noun) the lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church | Synonyms: doorkeeper, ostiary |
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ostiary | (noun) someone who guards an entrance | Synonyms: door guard, doorkeeper, doorman, gatekeeper, hall porter, porter |
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(noun) the lowest of the minor Holy Orders in the unreformed Western Church but now suppressed by the Roman Catholic Church | Synonyms: doorkeeper, ostiarius |
ostinato | (noun) a musical phrase repeated over and over during a composition | - |
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ostiole | (noun) a small pore especially one in the reproductive bodies of certain algae and fungi through which spores pass | - |
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ostler | (noun) someone employed in a stable to take care of the horses | Synonyms: groom, hostler, stableboy, stableman |
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ostomy | (noun) surgical procedure that creates an artificial opening for the elimination of bodily wastes | - |
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ostracism | (noun) the act of excluding someone from society by general consent | - |
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(noun) the state of being banished or ostracized (excluded from society by general consent) | Synonyms: banishment, Coventry |
ostracod | (noun) tiny marine and freshwater crustaceans with a shrimp-like body enclosed in a bivalve shell | Synonyms: mussel shrimp, seed shrimp |
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ostracoderm | (noun) extinct fish-like jawless vertebrate having a heavily armored body; of the Paleozoic | - |
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ostrich | (noun) fast-running African flightless bird with two-toed feet; largest living bird | Synonyms: Struthio camelus |
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(noun) a person who refuses to face reality or recognize the truth (a reference to the popular notion that the ostrich hides from danger by burying its head in the sand) | - |