| ablepharia | (noun) a congenital absence of eyelids (partial or complete) | - |
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| acanthocephalan | (noun) any of various worms living parasitically in intestines of vertebrates having a retractile proboscis covered with many hooked spines | Synonyms: spiny-headed worm |
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| acephalia | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalism, acephaly |
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| acephalism | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephaly |
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| acephalous | (adjective) lacking a head or a clearly defined head | - |
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| acephaly | (noun) absence of the head (as in the development of some monsters) | Synonyms: acephalia, acephalism |
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| acrocephaly | (noun) a congenital abnormality of the skull; the top of the skull assumes a cone shape | Synonyms: oxycephaly |
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| aleph | (noun) the 1st letter of the Hebrew alphabet | - |
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| anencephalia | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephaly |
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| anencephalic | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalous |
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| anencephalous | (adjective) characterized by partial or total absence of a brain | Synonyms: anencephalic |
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| anencephaly | (noun) a defect in brain development resulting in small or missing brain hemispheres | Synonyms: anencephalia |
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| bicephalous | (adjective) having two heads | - |
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| blepharism | (noun) condition in which a person blinks continuously | - |
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| blepharitis | (noun) inflammation of the eyelids characterized by redness and swelling and dried crusts | - |
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| blepharospasm | (noun) spasm of the eyelid muscle resulting in closure of the eye | - |
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| brachycephalic | (adjective) having a short broad head with a cephalic index of over 80 | Synonyms: brachycranial, brachycranic |
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| (noun) an adult with a short broad head | - |
| brachycephalism | (noun) the quality of being brachycephalic | Synonyms: brachycephaly |
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| brachycephaly | (noun) the quality of being brachycephalic | Synonyms: brachycephalism |
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| cephalalgia | (noun) pain in the head caused by dilation of cerebral arteries or muscle contractions or a reaction to drugs | Synonyms: head ache, headache |
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| cephalaspid | (noun) extinct jawless fish of the Devonian with armored head | Synonyms: osteostracan |
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| cephalexin | (noun) a cephalosporin antibiotic (trade names Keflex and Keflin and Keftab) commonly prescribed for mild to moderately severe infections of the skin or ears or throat or lungs or urinary tract | Synonyms: Keflex, Keflin, Keftab |
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| cephalhematoma | (noun) a collection of blood under the scalp of a newborn; caused by pressure during birth | Synonyms: cephalohematoma |
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| cephalic | (adjective) of or relating to the head | - |
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| cephalitis | (noun) inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) | Synonyms: encephalitis, phrenitis |
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| cephalochordate | (noun) fish-like animals having a notochord rather than a true spinal column | - |
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| cephaloglycin | (noun) antibiotic related to cephalosporin but no longer in common use | Synonyms: Kafocin |
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| cephalohematoma | (noun) a collection of blood under the scalp of a newborn; caused by pressure during birth | Synonyms: cephalhematoma |
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| cephalometry | (noun) measurement of human heads | - |
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| cephalopod | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopodan |
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| (noun) marine mollusk characterized by well-developed head and eyes and sucker-bearing tentacles | Synonyms: cephalopod mollusk |
| cephalopodan | (adjective) relating or belonging to the class Cephalopoda | Synonyms: cephalopod |
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| cephaloridine | (noun) a broad spectrum semisynthetic antibiotic produced by modifying cephalosporin | - |
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| cephalosporin | (noun) one of several broad spectrum antibiotic substances obtained from fungi and related to penicillin (trade names Mefoxin); addition of side chains has produced semisynthetic antibiotics with greater antibacterial activity | Synonyms: Mefoxin |
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| cephalothin | (noun) a semisynthetic analogue of cephalosporin | - |
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| clinocephalism | (noun) a congenital defect in which the top of the head is depressed (concave instead of convex) | Synonyms: clinocephaly |
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| clinocephaly | (noun) a congenital defect in which the top of the head is depressed (concave instead of convex) | Synonyms: clinocephalism |
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| deoxyephedrine | (noun) an amphetamine derivative (trade name Methedrine) used in the form of a crystalline hydrochloride; used as a stimulant to the nervous system and as an appetite suppressant | Synonyms: chalk, chicken feed, crank, glass, ice, meth, methamphetamine, methamphetamine hydrochloride, Methedrine, shabu, trash |
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| diencephalon | (noun) the posterior division of the forebrain; connects the cerebral hemispheres with the mesencephalon | Synonyms: betweenbrain, interbrain, thalmencephalon |
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| dolichocephalic | (adjective) having a relatively long head with a cephalic index of under 75 | Synonyms: dolichocranial, dolichocranic |
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| (noun) an adult with a long narrow head | - |
| dolichocephalism | (noun) the quality of being dolichocephalic | Synonyms: dolichocephaly |
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| dolichocephaly | (noun) the quality of being dolichocephalic | Synonyms: dolichocephalism |
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| echoencephalogram | (noun) a graphical image of the brain produced by an echoencephalograph | - |
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| echoencephalograph | (noun) a sonograph that creates an image of the brain and its abnormalities | - |
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| echoencephalography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study the anatomy of the brain | - |
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| electroencephalogram | (noun) a graphical record of electrical activity of the brain; produced by an electroencephalograph | Synonyms: EEG, encephalogram |
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| electroencephalograph | (noun) medical instrument that records electric currents generated by the brain | - |
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| electroencephalographic | (adjective) of or relating to an electroencephalograph | - |
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| elephant | (noun) five-toed pachyderm | - |
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| (noun) the symbol of the Republican Party; introduced in cartoons by Thomas Nast in 1874 | - |
| elephantiasis | (noun) hypertrophy of certain body parts (usually legs and scrotum); the end state of the disease filariasis | - |
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| elephantine | (adjective) of great mass; huge and bulky | Synonyms: gargantuan, giant, jumbo |
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| encephalartos | (noun) any of numerous cycads of the genus Encephalartos having stout cylindrical trunks and a terminal crown of long often spiny pinnate leaves | - |
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| encephalitis | (noun) inflammation of the brain usually caused by a virus; symptoms include headache and neck pain and drowsiness and nausea and fever (`phrenitis' is no longer in scientific use) | Synonyms: cephalitis, phrenitis |
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| encephalocele | (noun) protrusion of brain tissue through a congenital fissure in the skull | - |
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| encephalogram | (noun) an X ray of the brain made by replacing spinal fluid with a gas (usually oxygen) to improve contrast | Synonyms: pneumoencephalogram |
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| (noun) a graphical record of electrical activity of the brain; produced by an electroencephalograph | Synonyms: EEG, electroencephalogram |
| encephalograph | (noun) Any apparatus used to produce an encephalogram by recording electric currents generated by the brain. | - |
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| encephalography | (noun) roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram | - |
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| encephalomeningitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: cerebromeningitis, meningoencephalitis |
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| encephalomyelitis | (noun) inflammation of the brain and spinal cord | - |
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| encephalon | (noun) that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord | Synonyms: brain |
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| encephalopathy | (noun) any disorder or disease of the brain | Synonyms: brain disease, brain disorder |
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| enkephalin | (noun) an endorphin having opiate qualities that occurs in the brain and spinal cord and elsewhere | - |
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| epha | (noun) an ancient Hebrew unit of dry measure equal to about a bushel | Synonyms: ephah |
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| ephah | (noun) an ancient Hebrew unit of dry measure equal to about a bushel | Synonyms: epha |
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| ephebeia | (noun) in ancient Greece, a state institution organized to train freeborn youths between the ages of 18 and 20 for military and administrative service. | - |
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| ephedra | (noun) jointed and nearly leafless desert shrub having reduced scalelike leaves and reddish fleshy seeds | Synonyms: joint fir |
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| ephedrine | (noun) white odorless powdered or crystalline alkaloid from plants of the genus Ephedra (especially Ephedra sinica) or made synthetically; used as a bronchodilator to treat bronchitis and asthma | - |
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| ephemera | (noun) something transitory; lasting a day | - |
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| ephemeral | (adjective) lasting a very short time | Synonyms: fugacious, passing, short-lived, transient, transitory |
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| (noun) anything short-lived, as an insect that lives only for a day in its winged form | Synonyms: ephemeron |
| ephemerality | (noun) the property of lasting for a very short time | Synonyms: ephemeralness, fleetingness |
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| ephemeralness | (noun) the property of lasting for a very short time | Synonyms: ephemerality, fleetingness |
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| ephemerid | (noun) short-lived insect | Synonyms: ephemeropteran |
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| ephemeris | (noun) an annual publication containing astronomical tables that give the positions of the celestial bodies throughout the year | - |
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| ephemeron | (noun) anything short-lived, as an insect that lives only for a day in its winged form | Synonyms: ephemeral |
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| ephemeropteran | (noun) short-lived insect | Synonyms: ephemerid |
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| epinephrin | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, adrenaline, epinephrine |
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| epinephrine | (noun) a catecholamine secreted by the adrenal medulla in response to stress (trade name Adrenalin); stimulates autonomic nerve action | Synonyms: Adrenalin, adrenaline, epinephrin |
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| glomerulonephritis | (noun) nephritis marked by inflammation of the glomeruli of the kidney; characterized by decreased production of urine and by the presence of blood and protein in the urine and by edema | - |
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| grandnephew | (noun) a son of your niece or nephew | Synonyms: great-nephew |
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| hebephrenia | (noun) a form of schizophrenia characterized by severe disintegration of personality including erratic speech and childish mannerisms and bizarre behavior; usually becomes evident during puberty; the most common diagnostic category in mental institutions | Synonyms: disorganized schizophrenia, disorganized type schizophrenia, hebephrenic schizophrenia |
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| hebephrenic | (adjective) suffering from a form of schizophrenia characterized by foolish mannerisms and senseless laughter along with delusions and regressive behavior | - |
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| holocephalan | (noun) fish with high compressed head and a body tapering off into a long tail | Synonyms: holocephalian |
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| holocephalian | (noun) fish with high compressed head and a body tapering off into a long tail | Synonyms: holocephalan |
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| hydrocephalic | (adjective) relating to or characterized by or evidencing hydrocephalus | - |
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| hydrocephalus | (noun) an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological | Synonyms: hydrocephaly |
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| hydrocephaly | (noun) an abnormal condition in which cerebrospinal fluid collects in the ventricles of the brain; in infants it can cause abnormally rapid growth of the head and bulging fontanelles and a small face; in adults the symptoms are primarily neurological | Synonyms: hydrocephalus |
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| hydronephrosis | (noun) accumulation of urine in the kidney because of an obstruction in the ureter | - |
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| leptocephalus | (noun) slender transparent larva of eels and certain fishes | - |
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| leukoencephalitis | (noun) inflammation of the white matter of the brain | - |
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| macrencephalic | (adjective) having a large brain case | Synonyms: macrencephalous |
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| macrencephalous | (adjective) having a large brain case | Synonyms: macrencephalic |
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| macrencephaly | (noun) an abnormally large braincase | - |
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| macrocephalic | (adjective) having an exceptionally large head and brain | Synonyms: macrocephalous |
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| macrocephalous | (adjective) having an exceptionally large head and brain | Synonyms: macrocephalic |
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| macrocephaly | (noun) an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical | Synonyms: megacephaly, megalocephaly |
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| marginocephalian | (noun) includes boneheaded (pachycephalosaurs) and horned (ceratopsian) dinosaurs | Synonyms: Marginocephalia, suborder Marginocephalia |
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| megacephaly | (noun) an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical | Synonyms: macrocephaly, megalocephaly |
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| megalocephaly | (noun) an abnormally large head; differs from hydrocephalus because there is no increased intracranial pressure and the overgrowth is symmetrical | Synonyms: macrocephaly, megacephaly |
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| meningoencephalitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: cerebromeningitis, encephalomeningitis |
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| mephenytoin | (noun) a toxic anticonvulsant drug (trade name Mesantoin) used in the treatment of epilepsy when less toxic anticonvulsants have been ineffective | Synonyms: Mesantoin |
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| mephistophelean | (adjective) showing the cunning or ingenuity or wickedness typical of a devil | Synonyms: devilish, diabolic, diabolical, mephistophelian |
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