| cryptography | (noun) act of writing in code or cipher | Synonyms: coding, secret writing, steganography |
|---|
| (noun) the science of analyzing and deciphering codes and ciphers and cryptograms | Synonyms: cryptanalysis, cryptanalytics, cryptology |
| cryptophyte | (noun) common in fresh and salt water appearing along the shore as algal blooms | Synonyms: cryptomonad |
|---|
| crystallography | (noun) the branch of science that studies the formation and structure of crystals | - |
|---|
| cyanohydrin | (noun) any organic compound in which the cyano radical -CN and the hydroxyl radical -OH are attached to the same carbon atom | - |
|---|
| cyclothymia | (noun) a mild bipolar disorder that persists over a long time | Synonyms: cyclic disorder, cyclothymic disorder |
|---|
| dehydration | (noun) the process of extracting moisture | Synonyms: desiccation, drying up, evaporation |
|---|
| (noun) dryness resulting from the removal of water | Synonyms: desiccation |
| (noun) depletion of bodily fluids | - |
| dehydroretinol | (noun) a viscous alcohol that is less active in mammals than is vitamin A1 | Synonyms: vitamin A2 |
|---|
| demography | (noun) the branch of sociology that studies the characteristics of human populations | Synonyms: human ecology |
|---|
| deoxythymidine | (noun) a nucleoside component of DNA; composed of thymine and deoxyribose | Synonyms: thymidine |
|---|
| dermatophytosis | (noun) fungal infection of the skin (especially of moist parts covered by clothing) | Synonyms: dermatomycosis |
|---|
| diaphysis | (noun) the main (mid) section of a long bone | Synonyms: shaft |
|---|
| diarchy | (noun) a form of government having two joint rulers | Synonyms: dyarchy |
|---|
| diethylmalonylurea | (noun) a barbiturate used as a hypnotic | Synonyms: barbital, barbitone, diethylbarbituric acid, veronal |
|---|
| diethylstilbesterol | (noun) synthetic nonsteroid with the properties of estrogen; formerly used to treat menstrual problems but was found to be associated with vaginal cancers in the daughters of women so treated during pregnancy | Synonyms: DES, stilbesterol |
|---|
| diethylstilbestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilboestrol, stilbestrol, stilboestrol |
|---|
| diethylstilboestrol | (noun) a potent estrogen used in medicine and in feed for livestock and poultry | Synonyms: DES, diethylstilbestrol, stilbestrol, stilboestrol |
|---|
| dihybrid | (noun) a hybrid produced by parents that differ only at two gene loci that have two alleles each | - |
|---|
| dihydrostreptomycin | (noun) antibiotic consisting of a hydrogenated form of streptomycin; used against tuberculosis and tularemia and Gram-negative organisms | - |
|---|
| dihydroxyphenylalanine | (noun) amino acid that is formed in the liver and converted into dopamine in the brain | Synonyms: dopa |
|---|
| dimenhydrinate | (noun) antihistamine and antiemetic (trade name Dramamine) used to treat motion sickness | Synonyms: Dramamine |
|---|
| dimethylglyoxime | (noun) a compound used in analysis as a precipitant for palladium or nickel | - |
|---|
| dinghy | (noun) a small boat of shallow draft with cross thwarts for seats and rowlocks for oars with which it is propelled | Synonyms: dory, rowboat |
|---|
| diphenhydramine | (noun) antihistamine (trade name Benadryl) used to treat allergic reactions involving the nasal passages (hay fever) and also to treat motion sickness | Synonyms: Benadryl |
|---|
| diphenylhydantoin | (noun) an anticonvulsant drug (trade name Dilantin) used to treat epilepsy and that is not a sedative | Synonyms: Dilantin, phenytoin |
|---|
| discography | (noun) a descriptive catalog of musical recordings | - |
|---|
| dithyramb | (noun) (ancient Greece) a passionate hymn (usually in honor of Dionysus) | - |
|---|
| (noun) a wildly enthusiastic speech or piece of writing | - |
| duchy | (noun) the domain controlled by a duke or duchess | Synonyms: dukedom |
|---|
| dyarchy | (noun) a form of government having two joint rulers | Synonyms: diarchy |
|---|
| dysthymia | (noun) mild chronic depression | Synonyms: dysthymic depression |
|---|
| dystrophy | (noun) any degenerative disorder resulting from inadequate or faulty nutrition | - |
|---|
| (noun) any of several hereditary diseases of the muscular system characterized by weakness and wasting of skeletal muscles | Synonyms: muscular dystrophy |
| ecchymosis | (noun) the escape of blood from ruptured blood vessels into the surrounding tissue to form a purple or black-and-blue spot on the skin | - |
|---|
| (noun) the purple or black-and-blue area resulting from a bruise | - |
| echocardiography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study to structure and motions of the heart | - |
|---|
| echoencephalography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study the anatomy of the brain | - |
|---|
| echography | (noun) using the reflections of high-frequency sound waves to construct an image of a body organ (a sonogram); commonly used to observe fetal growth or study bodily organs | Synonyms: sonography, ultrasonography, ultrasound |
|---|
| ectomorphy | (noun) slender, weak, and lightweight | Synonyms: asthenic type |
|---|
| electrocardiography | (noun) diagnostic procedure consisting of recording the activity of the heart electronically with a cardiograph (and producing a cardiogram) | Synonyms: cardiography |
|---|
| electromyography | (noun) diagnosis of neuromuscular disorders with the use of an electromyograph | - |
|---|
| empathy | (noun) understanding and entering into another's feelings | - |
|---|
| emphysema | (noun) an abnormal condition of the lungs marked by decreased respiratory function; associated with smoking or chronic bronchitis or old age | Synonyms: pulmonary emphysema |
|---|
| encephalography | (noun) roentgenography of the brain after spinal fluid has been replaced by a gas (usually oxygen); produces an encephalogram | - |
|---|
| encephalopathy | (noun) any disorder or disease of the brain | Synonyms: brain disease, brain disorder |
|---|
| endomorphy | (noun) round, fat, and heavy | Synonyms: pyknic type |
|---|
| entelechy | (noun) (Aristotle) the state of something that is fully realized; actuality as opposed to potentiality | - |
|---|
| enteropathy | (noun) a disease of the intestinal tract | - |
|---|
| eparchy | (noun) a diocese of the Eastern Orthodox Church | Synonyms: exarchate |
|---|
| (noun) a province in ancient Greece | - |
| epigraphy | (noun) the study of ancient inscriptions | - |
|---|
| epiphyllum | (noun) any cactus of the genus Epiphyllum having flattened jointed irregularly branching stems and showy tubular flowers | Synonyms: orchid cactus |
|---|
| epiphysis | (noun) 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 | - |
|---|
| (noun) a small endocrine gland in the brain; situated beneath the back part of the corpus callosum; secretes melatonin | Synonyms: epiphysis cerebri, pineal body, pineal gland |
| epiphyte | (noun) plant that derives moisture and nutrients from the air and rain; usually grows on another plant but not parasitic on it | Synonyms: aerophyte, air plant, epiphytic plant |
|---|
| ethnography | (noun) the branch of anthropology that provides scientific description of individual human societies | Synonyms: descriptive anthropology |
|---|
| ethyl | (noun) the univalent hydrocarbon radical C2H5 derived from ethane by the removal of one hydrogen atom | Synonyms: ethyl group, ethyl radical |
|---|
| ethylene | (noun) a flammable colorless gaseous alkene; obtained from petroleum and natural gas and used in manufacturing many other chemicals; sometimes used as an anesthetic | Synonyms: ethene |
|---|
| ethyne | (noun) a colorless flammable gas used chiefly in welding and in organic synthesis | Synonyms: acetylene, alkyne |
|---|
| euglenophyte | (noun) marine and freshwater green or colorless flagellate organism | Synonyms: euglenid, euglenoid |
|---|
| eurhythmics | (noun) the interpretation in harmonious bodily movements of the rhythm of musical compositions; used to teach musical understanding | Synonyms: eurhythmy, eurythmics, eurythmy |
|---|
| eurhythmy | (noun) the interpretation in harmonious bodily movements of the rhythm of musical compositions; used to teach musical understanding | Synonyms: eurhythmics, eurythmics, eurythmy |
|---|
| formaldehyde | (noun) a colorless poisonous gas; made by the oxidation of methanol | Synonyms: methanal |
|---|
| furfuraldehyde | (noun) a liquid aldehyde with a penetrating odor; made from plant hulls and corncobs; used in making furan and as a solvent | Synonyms: furfural |
|---|
| gametophyte | (noun) the gamete-bearing individual or phase in the life cycle of a plant having alternation of generations | - |
|---|
| gammopathy | (noun) a disturbance in the synthesis of immunoglobulins; proteins having antibody activity increase greatly in the blood | - |
|---|
| geography | (noun) study of the earth's surface; includes people's responses to topography and climate and soil and vegetation | Synonyms: geographics |
|---|
| geophysicist | (noun) a geologist who uses physical principles to study the properties of the earth | - |
|---|
| geophysics | (noun) geology that uses physical principles to study properties of the earth | Synonyms: geophysical science |
|---|
| geophyte | (noun) a perennial plant that propagates by underground bulbs or tubers or corms | - |
|---|
| glyceraldehyde | (noun) a sweet crystalline aldehyde formed by the breakdown of sugars | Synonyms: glyceric aldehyde |
|---|
| glyptography | (noun) carving or engraving (especially on stones) | - |
|---|
| (noun) carvings or engravings (especially on precious stones) | Synonyms: glyptic art |
| gymnosophy | (noun) the doctrine of a sect of Hindu philosophers who practiced nudity and asceticism and meditation | - |
|---|
| gynarchy | (noun) a political system governed by a woman | Synonyms: gynecocracy |
|---|
| haemoglobinopathy | (noun) a blood disease characterized by the presence of abnormal hemoglobins in the blood | Synonyms: hemoglobinopathy |
|---|
| hagiography | (noun) a biography that idealizes or idolizes the person (especially a person who is a saint) | - |
|---|
| halophyte | (noun) plant growing naturally in very salty soil | - |
|---|
| hemiepiphyte | (noun) a plant that is an epiphyte for part of its life | Synonyms: semiepiphyte |
|---|
| hemoglobinopathy | (noun) a blood disease characterized by the presence of abnormal hemoglobins in the blood | Synonyms: haemoglobinopathy |
|---|
| hierarchy | (noun) a series of ordered groupings of people or things within a system | - |
|---|
| (noun) the organization of people at different ranks in an administrative body | Synonyms: pecking order, power structure |
| historiography | (noun) the writing of history | - |
|---|
| (noun) a body of historical literature | - |
| holography | (noun) the branch of optics that deals with the use of coherent light from a laser in order to make a hologram that can then be used to create a three-dimensional image | - |
|---|
| holophyte | (noun) an organism that produces its own food by photosynthesis | - |
|---|
| homeopathy | (noun) a method of treating disease with small amounts of remedies that, in large amounts in healthy people, produce symptoms similar to those being treated | Synonyms: homoeopathy |
|---|
| homoeopathy | (noun) a method of treating disease with small amounts of remedies that, in large amounts in healthy people, produce symptoms similar to those being treated | Synonyms: homeopathy |
|---|
| homomorphy | (noun) similarity of form | Synonyms: homomorphism |
|---|
| hyacinth | (noun) any of numerous bulbous perennial herbs | - |
|---|
| (noun) a red transparent variety of zircon used as a gemstone | Synonyms: jacinth |
| hyaena | (noun) doglike nocturnal mammal of Africa and southern Asia that feeds chiefly on carrion | Synonyms: hyena |
|---|
| hyalin | (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyaline |
|---|
| hyaline | (noun) a glassy translucent substance that occurs in hyaline cartilage or in certain skin conditions | Synonyms: hyalin |
|---|
| hyalinisation | (noun) the state of being hyaline or having become hyaline | Synonyms: hyalinization |
|---|
| hyalinization | (noun) the state of being hyaline or having become hyaline | Synonyms: hyalinisation |
|---|
| hyaloid | (noun) the transparent membrane enveloping the vitreous humor of the eye and separating it from the retina | Synonyms: hyaloid membrane |
|---|
| hyaloplasm | (noun) the clear nongranular portion of the cytoplasm of a cell | Synonyms: ground substance |
|---|
| hyaluronidase | (noun) an enzyme (trade name Hyazyme) that splits hyaluronic acid and so lowers its viscosity and increases the permeability of connective tissue and the absorption of fluids | Synonyms: Hyazyme, spreading factor |
|---|
| hybrid | (noun) (genetics) an organism that is the offspring of genetically dissimilar parents or stock; especially offspring produced by breeding plants or animals of different varieties or breeds or species | Synonyms: cross, crossbreed |
|---|
| (noun) a car which runs on two power sources, usually an internal combustion engine and an electronic motor | Synonyms: hybrid car |
| (noun) a composite of mixed origin | - |
| (noun) a word that is composed of parts from different languages (e.g., `monolingual' has a Greek prefix and a Latin root) | Synonyms: loan-blend, loanblend |
| hybridisation | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridization, hybridizing, interbreeding |
|---|
| hybridization | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridisation, hybridizing, interbreeding |
|---|
| hybridizing | (noun) (genetics) the act of mixing different species or varieties of animals or plants and thus to produce hybrids | Synonyms: cross, crossbreeding, crossing, hybridisation, hybridization, interbreeding |
|---|
| hybridoma | (noun) a hybrid cell resulting from the fusion of a lymphocyte and a tumor cell; used to culture a specific monoclonal antibody | - |
|---|
| hydantoin | (noun) any of a group of anticonvulsant drugs used in treating epilepsy | - |
|---|
| hydathode | (noun) a pore that exudes water on the surface or margin of a leaf of higher plants | Synonyms: water pore, water stoma |
|---|
| hydatid | (noun) cyst filled with liquid; forms as a result of infestation by tapeworm larvae (as in echinococcosis) | - |
|---|
| hydatidosis | (noun) infestation with larval echinococci (tapeworms) | Synonyms: echinococcosis, hydatid disease |
|---|
| hydra | (noun) small tubular solitary freshwater hydrozoan polyp | - |
|---|
| (noun) trouble that cannot be overcome by a single effort because of its many aspects or its persistent and pervasive quality | - |
| hydralazine | (noun) an antihypertensive drug (trade name Apresoline) that dilates blood vessels; used (often with a diuretic) to treat hypertension and congestive heart failure | Synonyms: Apresoline |
|---|