| abasia | (noun) inability to walk | - |
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| abasic | (adjective) of or relating to abasia (inability to walk) | Synonyms: abatic |
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| abdominocentesis | (noun) centesis of the belly to remove fluid for diagnosis | Synonyms: paracentesis |
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| abdominovesical | (adjective) of or relating to the abdomen and the urinary bladder | - |
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| abiogenesis | (noun) a hypothetical organic phenomenon by which living organisms are created from nonliving matter | Synonyms: autogenesis, autogeny, spontaneous generation |
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| abocclusion | (noun) the condition in which the upper teeth do not touch the lower teeth when biting | - |
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| abrasion | (noun) the wearing down of rock particles by friction due to water or wind or ice | Synonyms: attrition, detrition, grinding |
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| (noun) erosion by friction | Synonyms: attrition, corrasion, detrition |
| (noun) an abraded area where the skin is torn or worn off | Synonyms: excoriation, scrape, scratch |
| abrasive | (adjective) sharply disagreeable; rigorous | Synonyms: harsh |
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| (adjective) causing abrasion | Synonyms: scratchy |
| (noun) a substance that abrades or wears down | Synonyms: abradant, abrasive material |
| abrasiveness | (noun) the roughness of a substance that causes abrasions | Synonyms: harshness, scratchiness |
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| (noun) the quality of being sharply disagreeable | - |
| abscission | (noun) the act of cutting something off | Synonyms: cutting off |
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| (noun) shedding of flowers and leaves and fruit following formation of scar tissue in a plant | - |
| absinth | (noun) strong green liqueur flavored with wormwood and anise | Synonyms: absinthe |
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| absinthe | (noun) strong green liqueur flavored with wormwood and anise | Synonyms: absinth |
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| (noun) aromatic herb of temperate Eurasia and North Africa having a bitter taste used in making the liqueur absinthe | Synonyms: Artemisia absinthium, common wormwood, lad's love, old man |
| abstrusity | (noun) wisdom that is recondite and abstruse and profound | Synonyms: abstruseness, profoundness, profundity, reconditeness |
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| abusive | (adjective) characterized by physical or psychological maltreatment | - |
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| (adjective) expressing offensive reproach | Synonyms: opprobrious, scurrilous |
| abusively | (adverb) in an abusive manner | - |
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| acanthocytosis | (noun) the presence of acanthocytes in the blood stream (as in abetalipoproteinemia) | - |
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| acantholysis | (noun) a breakdown of a cell layer in the epidermis (as in pemphigus) | - |
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| acanthosis | (noun) an abnormal but benign thickening of the prickle-cell layer of the skin (as in psoriasis) | - |
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| acariasis | (noun) infestation with itch mites | Synonyms: acaridiasis, acariosis |
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| acaridiasis | (noun) infestation with itch mites | Synonyms: acariasis, acariosis |
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| acariosis | (noun) infestation with itch mites | Synonyms: acariasis, acaridiasis |
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| acataphasia | (noun) a disorder in which a lesion to the central nervous system leaves you unable to formulate a statement or to express yourself in an organized manner | - |
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| accessibility | (noun) the quality of being at hand when needed | Synonyms: availability, availableness, handiness |
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| (noun) the attribute of being easy to meet or deal with | Synonyms: approachability |
| accessible | (adjective) capable of being reached | - |
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| (adjective) easy to get along with or talk to; friendly | - |
| (adjective) easily obtained | - |
| (adjective) capable of being read with comprehension | Synonyms: approachable |
| accession | (noun) the act of attaining or gaining access to a new office or right or position (especially the throne) | Synonyms: rise to power |
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| (noun) the right to enter | Synonyms: access, admission, admittance, entree |
| (noun) agreeing with or consenting to (often unwillingly) | Synonyms: assenting |
| (noun) something added to what you already have | Synonyms: addition |
| (noun) (civil law) the right to all of that which your property produces whether by growth or improvement | - |
| (noun) a process of increasing by addition (as to a collection or group) | - |
| (verb) make a record of additions to a collection, such as a library | - |
| accessional | (adjective) of or constituting an accession | - |
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| accusing | (adjective) containing or expressing accusation | Synonyms: accusative, accusatory, accusive |
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| accusingly | (adverb) in an accusing manner | - |
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| accusive | (adjective) containing or expressing accusation | Synonyms: accusative, accusatory, accusing |
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| achondroplasia | (noun) an inherited skeletal disorder beginning before birth; cartilage is converted to bone resulting in dwarfism | Synonyms: achondroplasty, chondrodystrophy, osteosclerosis congenita |
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| achromasia | (noun) unnatural lack of color in the skin (as from bruising or sickness or emotional distress) | Synonyms: lividity, lividness, luridness, paleness, pallidness, pallor, wanness |
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| acidosis | (noun) abnormally high acidity (excess hydrogen-ion concentration) of the blood and other body tissues | - |
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| acquisition | (noun) the act of contracting or assuming or acquiring possession of something | - |
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| (noun) an ability that has been acquired by training | Synonyms: accomplishment, acquirement, attainment, skill |
| (noun) the cognitive process of acquiring skill or knowledge | Synonyms: learning |
| (noun) something acquired | - |
| acquisitive | (adjective) eager to acquire and possess things especially material possessions or ideas | - |
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| acquisitiveness | (noun) strong desire to acquire and possess | - |
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| acroanaesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanesthesia |
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| acroanesthesia | (noun) loss of sensation in the extremities | Synonyms: acroanaesthesia |
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| acrocyanosis | (noun) cyanosis of the extremities; can occur when a spasm of the blood vessels is caused by exposure to cold or by strong emotion | Synonyms: Raynaud's sign |
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| actinomycosis | (noun) disease of cattle that can be transmitted to humans; results from infection with actinomycetes; characterized by hard swellings that exude pus through long sinuses | - |
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| actomyosin | (noun) a protein complex in muscle fibers; composed of myosin and actin; shortens when stimulated and causes muscle contractions | - |
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| adenohypophysis | (noun) the anterior lobe of the pituitary body; primarily glandular in nature | Synonyms: anterior pituitary, anterior pituitary gland |
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| adenomyosis | (noun) the presence of endometrium elsewhere than in the lining of the uterus; causes premenstrual pain and dysmenorrhea | Synonyms: endometriosis |
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| adenosine | (noun) (biochemistry) a nucleoside that is a structural component of nucleic acids; it is present in all living cells in a combined form as a constituent of DNA and RNA and ADP and ATP and AMP | - |
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| adenosis | (noun) a disorder of the glands of the body | Synonyms: gland disease, glandular disease, glandular disorder |
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| adesite | (noun) dark greyish extrusive rock | - |
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| adhesion | (noun) faithful support for a cause or political party or religion | Synonyms: adherence, attachment |
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| (noun) the property of sticking together (as of glue and wood) or the joining of surfaces of different composition | Synonyms: adherence, adhesiveness, bond |
| (noun) a fibrous band of scar tissue that binds together normally separate anatomical structures | - |
| (noun) abnormal union of bodily tissues; most common in the abdomen | - |
| adhesive | (adjective) tending to adhere | - |
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| (noun) a substance that unites or bonds surfaces together | Synonyms: adhesive agent, adhesive material |
| adhesiveness | (noun) the property of sticking together (as of glue and wood) or the joining of surfaces of different composition | Synonyms: adherence, adhesion, bond |
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| adiposis | (noun) the property of excessive fatness | Synonyms: corpulence, overweight, stoutness |
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| adiposity | (noun) having the property of containing fat | Synonyms: adiposeness, fattiness |
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| admissibility | (noun) acceptability by virtue of being admissible | - |
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| admissible | (adjective) deserving to be admitted | - |
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| admission | (noun) the act of admitting someone to enter | Synonyms: admittance |
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| (noun) the right to enter | Synonyms: access, accession, admittance, entree |
| (noun) an acknowledgment of the truth of something | - |
| (noun) the fee charged for admission | Synonyms: admission charge, admission fee, admission price, entrance fee, entrance money, price of admission |
| admissive | (adjective) characterized by or allowing admission | - |
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| adversity | (noun) a stroke of ill fortune; a calamitous event | - |
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| (noun) a state of misfortune or affliction | Synonyms: hard knocks, hardship |
| advertising | (noun) the business of drawing public attention to goods and services | Synonyms: merchandising, publicizing |
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| (noun) a public promotion of some product or service | Synonyms: ad, advert, advertisement, advertizement, advertizing |
| aerobiosis | (noun) life sustained in the presence of air or oxygen | - |
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| aesthesia | (noun) mental responsiveness and awareness | Synonyms: esthesia, sensibility |
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| aesthesis | (noun) an unelaborated elementary awareness of stimulation | Synonyms: esthesis, sensation, sense datum, sense experience, sense impression |
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| affusion | (noun) the act of baptizing someone by pouring water on their head | - |
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| agalactosis | (noun) a condition in which milk is not secreted in the mother's breasts after her child has been delivered | Synonyms: agalactia |
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| agamogenesis | (noun) reproduction without the fusion of gametes | Synonyms: asexual reproduction |
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| agenesia | (noun) imperfect development; nondevelopment of a part | Synonyms: agenesis |
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| agenesis | (noun) imperfect development; nondevelopment of a part | Synonyms: agenesia |
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| agerasia | (noun) youthful appearance in an old person | - |
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| aggression | (noun) violent action that is hostile and usually unprovoked | Synonyms: hostility |
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| (noun) deliberately unfriendly behavior | - |
| (noun) the act of initiating hostilities | - |
| (noun) a disposition to behave aggressively | - |
| (noun) a feeling of hostility that arouses thoughts of attack | Synonyms: aggressiveness |
| aggressive | (adjective) having or showing determination and energetic pursuit of your ends | - |
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| (adjective) characteristic of an enemy or one eager to fight | Synonyms: belligerent |
| (adjective) tending to spread quickly | Synonyms: fast-growing, strong-growing |
| aggressively | (adverb) in an aggressive manner | Synonyms: sharply |
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| aggressiveness | (noun) the quality of being bold and enterprising | - |
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| (noun) a natural disposition to be hostile | Synonyms: belligerence, pugnacity |
| (noun) a feeling of hostility that arouses thoughts of attack | Synonyms: aggression |
| agnosia | (noun) inability to recognize objects by use of the senses | - |
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| agonising | (adjective) extremely painful | Synonyms: agonizing, excruciating, harrowing, torturesome, torturing, torturous |
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| agranulocytosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulosis, granulocytopenia |
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| agranulosis | (noun) an acute blood disorder (often caused by radiation or drug therapy) characterized by severe reduction in granulocytes | Synonyms: agranulocytosis, granulocytopenia |
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| agribusiness | (noun) a large-scale farming enterprise | Synonyms: agriculture, factory farm |
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| airsick | (adjective) experiencing motion sickness | Synonyms: air sick, carsick, seasick |
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| airsickness | (noun) motion sickness experienced while traveling by air (especially during turbulence) | Synonyms: air sickness |
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| akinesia | (noun) motionlessness attributable to a temporary paralysis | Synonyms: akinesis |
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| akinesis | (noun) motionlessness attributable to a temporary paralysis | Synonyms: akinesia |
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| alkalosis | (noun) abnormally high alkalinity (low hydrogen-ion concentration) of the blood and other body tissues | - |
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| allegoresis | (noun) the interpretation of written, oral, or artistic expression as allegory. | - |
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| allusion | (noun) passing reference or indirect mention | - |
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| allusive | (adjective) characterized by indirect references | - |
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| allusiveness | (noun) a quality characterized by indirect reference | - |
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| alocasia | (noun) any plant of the genus Alocasia having large showy basal leaves and boat-shaped spathe and reddish berries | Synonyms: elephant's ear, elephant ear |
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| alongside | (adverb) side by side | Synonyms: aboard |
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| altissimo | (adjective) very high | - |
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| amanuensis | (noun) someone skilled in the transcription of speech (especially dictation) | Synonyms: shorthand typist, stenographer |
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| amaurosis | (noun) partial or total loss of sight without pathology of the eye; caused by disease of optic nerve or retina or brain | - |
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| ambiversion | (noun) (psychology) a balanced disposition intermediate between extroversion and introversion | - |
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| ambiversive | (adjective) intermediate between introversive and extroversive | - |
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| ambrosia | (noun) (classical mythology) the food and drink of the gods; mortals who ate it became immortal | Synonyms: nectar |
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| (noun) fruit dessert made of oranges and bananas with shredded coconut | - |
| (noun) any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma | Synonyms: bitterweed, ragweed |
| (noun) a mixture of nectar and pollen prepared by worker bees and fed to larvae | Synonyms: beebread |
| ambrosial | (adjective) worthy of the gods | Synonyms: ambrosian |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosian, nectarous |
| ambrosian | (adjective) worthy of the gods | Synonyms: ambrosial |
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| (adjective) extremely pleasing to the taste; sweet and fragrant | Synonyms: ambrosial, nectarous |
| amebiasis | (noun) infection by a disease-causing ameba | Synonyms: amebiosis, amoebiasis, amoebiosis |
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| amebiosis | (noun) infection by a disease-causing ameba | Synonyms: amebiasis, amoebiasis, amoebiosis |
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| amelogenesis | (noun) the developmental process of forming tooth enamel | - |
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| amitosis | (noun) the direct method of cell division characterized by simple division of the nucleus without formation of chromosomes | - |
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| amnesia | (noun) partial or total loss of memory | Synonyms: blackout, memory loss |
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| amnesiac | (adjective) suffering from a partial loss of memory | Synonyms: amnesic |
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| (noun) a person suffering from amnesia | Synonyms: amnesic |
| amnesic | (adjective) of or relating to or caused by amnesia | Synonyms: amnestic |
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| (adjective) suffering from a partial loss of memory | Synonyms: amnesiac |
| (noun) a person suffering from amnesia | Synonyms: amnesiac |