| anesthesia | (noun) loss of bodily sensation with or without loss of consciousness | Synonyms: anaesthesia |
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| angiohemophilia | (noun) a form of hemophilia discovered by Erik von Willebrand; a genetic disorder that is inherited as an autosomal recessive trait; characterized by a deficiency of the coagulation factor and by mucosal bleeding | Synonyms: vascular hemophilia, von Willebrand's disease |
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| angiotelectasia | (noun) dilation and enlargement of arterioles | - |
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| anhedonia | (noun) an inability to experience pleasure | - |
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| aniseikonia | (noun) visual defect in which the shape and size of an ocular image differ in the two eyes | - |
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| anisometropia | (noun) difference in the refractive power of the two eyes | - |
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| ankyloglossia | (noun) a congenital anomaly in which the mucous membrane under the tongue is too short limiting the mobility of the tongue | Synonyms: tongue tie |
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| anomia | (noun) inability to name objects or to recognize written or spoken names of objects | Synonyms: amnesic aphasia, amnestic aphasia, anomic aphasia, nominal aphasia |
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| anopia | (noun) sightlessness (especially because of a structural defect in or the absence of an eye) | - |
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| anorchia | (noun) absence of one of both testes | Synonyms: anorchidism, anorchism |
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| anorexia | (noun) a prolonged disorder of eating due to loss of appetite | - |
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| anorgasmia | (noun) absence of an orgasm in sexual relations | - |
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| anorthopia | (noun) distorted vision in which straight lines appear curved | - |
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| anosmia | (noun) absence of the sense of smell (as by damage to olfactory nasal tissue or the olfactory nerve or by obstruction of the nasal passages) | - |
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| anoxemia | (noun) abnormally low oxygen content in arterial blood | - |
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| anoxia | (noun) severe hypoxia; absence of oxygen in inspired gases or in arterial blood or in the tissues | - |
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| antinomasia | (noun) substitution of a title for a name | - |
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| anuria | (noun) inability to urinate | Synonyms: anuresis |
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| aphagia | (noun) loss of the ability to swallow | - |
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| aphakia | (noun) absence of the natural lens of the eye (usually resulting from the removal of cataracts) | - |
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| aphasia | (noun) inability to use or understand language (spoken or written) because of a brain lesion | - |
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| aphonia | (noun) a disorder of the vocal organs that results in the loss of voice | Synonyms: voicelessness |
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| aphrodisia | (noun) a desire for heterosexual intimacy | - |
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| aplasia | (noun) failure of some tissue or organ to develop | - |
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| apolemia | (noun) large siphonophore of up to 50 ft long | - |
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| apologia | (noun) a formal written defense of something you believe in strongly | Synonyms: apology |
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| appendicularia | (noun) free-swimming tadpole-shaped pelagic tunicate resembling larvae of other tunicates | - |
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| apraxia | (noun) inability to make purposeful movements | - |
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| aquaphobia | (noun) a morbid fear of drowning | - |
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| aquilegia | (noun) a plant of the genus Aquilegia having irregular showy spurred flowers; north temperate regions especially mountains | Synonyms: aquilege, columbine |
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| arachnophobia | (noun) a morbid fear of spiders | - |
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| aralia | (noun) any of various plants of the genus Aralia; often aromatic plants having compound leaves and small umbellate flowers | - |
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| araucaria | (noun) any of several tall South American or Australian trees with large cones and edible seeds | - |
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| archaebacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacterium, archaeobacteria, archeobacteria |
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| archaeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archeobacteria |
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| archeobacteria | (noun) considered ancient life forms that evolved separately from bacteria and blue-green algae | Synonyms: archaebacteria, archaebacterium, archaeobacteria |
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| areflexia | (noun) absence of a reflex; a sign of possible nerve damage | - |
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| aria | (noun) an elaborate song for solo voice | - |
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| arrhythmia | (noun) an abnormal rate of muscle contractions in the heart | Synonyms: cardiac arrhythmia |
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| artemisia | (noun) any of various composite shrubs or herbs of the genus Artemisia having aromatic green or greyish foliage | - |
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| arteria | (noun) a blood vessel that carries blood from the heart to the body | Synonyms: arterial blood vessel, artery |
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| arteriectasia | (noun) an abnormal distension of an artery | Synonyms: arteriectasis |
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| arthralgia | (noun) pain in a joint or joints | - |
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| asphyxia | (noun) a condition in which insufficient or no oxygen and carbon dioxide are exchanged on a ventilatory basis; caused by choking or drowning or electric shock or poison gas | - |
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| astasia | (noun) inability to stand due to muscular incoordination | - |
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| asthenia | (noun) an abnormal loss of strength | Synonyms: astheny |
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| asthenopia | (noun) a tiredness of the eyes caused by prolonged close work by a person with an uncorrected vision problem | Synonyms: eyestrain |
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| astigmia | (noun) (optics) defect in an optical system in which light rays from a single point fail to converge in a single focal point | Synonyms: astigmatism |
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| (noun) (ophthalmology) impaired eyesight resulting usually from irregular conformation of the cornea; common in nearsighted people | Synonyms: astigmatism |
| astrantia | (noun) any plant of the genus Astrantia | Synonyms: masterwort |
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| astraphobia | (noun) a morbid fear of thunder and lightning | - |
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| astroglia | (noun) tissue consisting of large stellate neuroglial cells | Synonyms: macroglia |
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| asynergia | (noun) absence of coordination of organs or body parts that usually work together harmoniously | Synonyms: asynergy |
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| ataraxia | (noun) peace of mind | - |
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| ataxia | (noun) inability to coordinate voluntary muscle movements; unsteady movements and staggering gait | Synonyms: ataxy, dyssynergia, motor ataxia |
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| atonia | (noun) lack of normal muscular tension or tonus | Synonyms: amyotonia, atonicity, atony |
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| atopognosia | (noun) absence or loss of topognosia; inability to locate correctly a point of touch | Synonyms: atopognosis |
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| atresia | (noun) an abnormal condition in which a normal opening or tube in the body (as the urethra) is closed or absent | - |
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| automysophobia | (noun) a morbid fear of being dirty | - |
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| avaritia | (noun) reprehensible acquisitiveness; insatiable desire for wealth (personified as one of the deadly sins) | Synonyms: avarice, covetousness, greed, rapacity |
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| azotaemia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotemia, uraemia, uremia |
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| azotemia | (noun) accumulation in the blood of nitrogenous waste products (urea) that are usually excreted in the urine | Synonyms: azotaemia, uraemia, uremia |
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| azoturia | (noun) excess of urea in the urine | - |
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| azymia | (noun) absence of an enzyme | - |
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| bacchanalia | (noun) a wild gathering involving excessive drinking and promiscuity | Synonyms: bacchanal, debauch, debauchery, drunken revelry, orgy, riot, saturnalia |
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| bacteremia | (noun) transient presence of bacteria (or other microorganisms) in the blood | Synonyms: bacteriaemia, bacteriemia |
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| bacteria | (noun) (microbiology) single-celled or noncellular spherical or spiral or rod-shaped organisms lacking chlorophyll that reproduce by fission; important as pathogens and for biochemical properties; taxonomy is difficult; often considered to be plants | Synonyms: bacterium |
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| bacteriaemia | (noun) transient presence of bacteria (or other microorganisms) in the blood | Synonyms: bacteremia, bacteriemia |
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| bacteriemia | (noun) transient presence of bacteria (or other microorganisms) in the blood | Synonyms: bacteremia, bacteriaemia |
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| balletomania | (noun) extraordinary enthusiasm for ballets | - |
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| banksia | (noun) any shrub or tree of the genus Banksia having alternate leathery leaves apetalous yellow flowers often in showy heads and conelike fruit with winged seeds | - |
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| bartonia | (noun) annual grown especially for its fragrant golden nocturnal flowers | Synonyms: Mentzelia lindleyi |
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| basophilia | (noun) the tendency of cells to stain with basic dyes | - |
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| batrachomyomachia | (noun) a silly altercation | - |
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| begonia | (noun) any of numerous plants of the genus Begonia grown for their attractive glossy asymmetrical leaves and colorful flowers in usually terminal cymes or racemes | - |
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| bergenia | (noun) any plant of the genus Bergenia; valued as an evergreen ground cover and for the spring blossoms | - |
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| bibliomania | (noun) preoccupation with the acquisition and possession of books | - |
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| bilharzia | (noun) an infestation with or a resulting infection caused by a parasite of the genus Schistosoma; common in the tropics and Far East; symptoms depend on the part of the body infected | Synonyms: bilharziasis, schistosomiasis |
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| bletia | (noun) any of various orchids of the genus Bletia having pseudobulbs and erect leafless racemes of large purple or pink flowers | - |
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| bocconia | (noun) small Central American tree having loose racemes of purple-tinted green flowers | Synonyms: Bocconia frutescens, tree celandine |
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| (noun) herb of China and Japan widely cultivated for its plumelike panicles of creamy white flowers | Synonyms: Macleaya cordata, plume poppy |
| bohemia | (noun) a group of artists and writers with real or pretended artistic or intellectual aspirations and usually an unconventional life style | - |
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| bolivia | (noun) a form of canasta in which sequences can be melded | - |
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| borrelia | (noun) cause of e.g. European and African relapsing fever | - |
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| brachydactylia | (noun) abnormal shortness of fingers and toes | Synonyms: brachydactyly |
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| bradycardia | (noun) abnormally slow heartbeat | - |
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| branchia | (noun) respiratory organ of aquatic animals that breathe oxygen dissolved in water | Synonyms: gill |
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| breccia | (noun) a rudaceous rock consisting of sharp fragments embedded in clay or sand | - |
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| bronchopneumonia | (noun) pneumonia characterized by acute inflammation of the walls of the bronchioles | Synonyms: bronchial pneumonia |
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| browallia | (noun) any of several herbs of the genus Browallia cultivated for their blue or violet or white flowers | Synonyms: bush violet |
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| buddleia | (noun) tropical shrub having clusters of white or violet or yellow flowers | Synonyms: butterfly bush |
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| bulimarexia | (noun) a disorder of eating in which the person alternates between strong craving for food and aversion to food; characterized by excessive eating followed by periods of fasting or self-induced vomiting | Synonyms: binge-purge syndrome, binge-vomit syndrome, bulimia nervosa |
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| bulimia | (noun) pathologically insatiable hunger (especially when caused by brain lesions) | - |
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| (noun) a disorder of eating seen among young women who go on eating binges and then feel guilt and depression and self-condemnation | Synonyms: binge-eating syndrome |
| cachexia | (noun) any general reduction in vitality and strength of body and mind resulting from a debilitating chronic disease | Synonyms: cachexy, wasting |
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| cafeteria | (noun) a restaurant where you serve yourself and pay a cashier | - |
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| caladenia | (noun) any of various orchids of the genus Caladenia | - |
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| calceolaria | (noun) any garden plant of the genus Calceolaria having flowers with large inflated slipper-shaped lower lip | Synonyms: slipperwort |
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| calvaria | (noun) the dome of the skull | Synonyms: skullcap |
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| camelia | (noun) any of several shrubs or small evergreen trees having solitary white or pink or reddish flowers | Synonyms: camellia |
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| camellia | (noun) any of several shrubs or small evergreen trees having solitary white or pink or reddish flowers | Synonyms: camelia |
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| cardia | (noun) the opening into the stomach and that part of the stomach connected to the esophagus | - |
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| carotenemia | (noun) excess carotene in the blood stream; can cause the skin to turn a pale yellow or red color | Synonyms: xanthemia |
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