| chorioretinitis | (noun) inflammation of the choroid layer behind the retina | - |
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| chorister | (noun) a singer in a choir | - |
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| chorizo | (noun) a spicy Spanish pork sausage | - |
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| choroid | (noun) a highly vascular membrane in the eye between the retina and the sclera; a dark pigmentation minimizes the scattering of light inside the eye | Synonyms: choroid coat |
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| chortle | (noun) a soft partly suppressed laugh | Synonyms: chuckle |
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| chorus | (noun) the part of a song where a soloist is joined by a group of singers | Synonyms: refrain |
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| (noun) any utterance produced simultaneously by a group | - |
| (noun) a group of people assembled to sing together | - |
| (noun) a body of dancers or singers who perform together | Synonyms: chorus line |
| (noun) a company of actors who comment (by speaking or singing in unison) on the action in a classical Greek play | Synonyms: Greek chorus |
| chosen | (noun) an exclusive group of people | Synonyms: elect |
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| (noun) one who is the object of choice; who is given preference | - |
| chou | (noun) puff filled with cream or custard | Synonyms: cream puff |
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| (noun) any of various types of cabbage | Synonyms: cabbage |
| chough | (noun) a European corvine bird of small or medium size with red legs and glossy black plumage | - |
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| chow | (noun) breed of medium-sized dogs with a thick coat and fluffy curled tails and distinctive blue-black tongues; believed to have originated in northern China | Synonyms: chow chow |
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| (noun) informal terms for a meal | Synonyms: chuck, eats, grub |
| chowchow | (noun) a Chinese preserve of mixed fruits and ginger | - |
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| (noun) chopped pickles in mustard sauce | - |
| chowder | (noun) a thick soup or stew made with milk and bacon and onions and potatoes | - |
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| cinchona | (noun) any of several trees of the genus Cinchona | Synonyms: chinchona |
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| (noun) medicinal bark of cinchona trees; source of quinine and quinidine | Synonyms: cinchona bark, Jesuit's bark, Peruvian bark |
| cinchonine | (noun) an alkaloid derivative of the bark of cinchona trees that is used as an antimalarial drug | - |
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| clavichord | (noun) an early stringed instrument like a piano but with more delicate sound | - |
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| conchoid | (noun) Any of a family of curves defined as the locus of points p, such that each p is on a line that passes through a given fixed point P and intersects a given curve, C, and the distance from p to the point of intersection with C is a specified constant (note that for nontrivial cases two such points p satisfy the criteria, and the resultant curve has two parts). | - |
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| conchologist | (noun) a collector and student of mollusc shells | - |
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| conchology | (noun) the collection and study of mollusc shells | Synonyms: shell collecting |
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| corchorus | (noun) any of various plants of the genus Corchorus having large leaves and cymose clusters of yellow flowers; a source of jute | - |
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| costochondritis | (noun) inflammation at the junction of a rib and its cartilage | - |
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| dichondra | (noun) a creeping perennial herb with hairy stems and orbicular to reniform leaves and small white to greenish flowers; used as a grass substitute in warm regions | Synonyms: Dichondra micrantha |
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| dichotomisation | (noun) the act of dividing into two sharply different categories | Synonyms: dichotomization |
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| dichotomization | (noun) the act of dividing into two sharply different categories | Synonyms: dichotomisation |
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| dichotomy | (noun) being twofold; a classification into two opposed parts or subclasses | Synonyms: duality |
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| dolichocephalic | (noun) an adult with a long narrow head | - |
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| 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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| echo | (noun) an imitation or repetition | - |
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| (noun) the repetition of a sound resulting from reflection of the sound waves | Synonyms: replication, reverberation, sound reflection |
| (noun) a reflected television or radio or radar beam | - |
| (noun) a close parallel of a feeling, idea, style, etc. | - |
| (noun) a reply that repeats what has just been said | - |
| echocardiogram | (noun) a graphical image of the heart produced by an echocardiograph | - |
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| echocardiograph | (noun) a sonograph that creates an image of the heart and its abnormalities | - |
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| echocardiography | (noun) a noninvasive diagnostic procedure that uses ultrasound to study to structure and motions of the heart | - |
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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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| echogram | (noun) an image of a structure that is produced by ultrasonography (reflections of high-frequency sound waves); used to observe fetal growth or to study bodily organs | Synonyms: sonogram |
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| echograph | (noun) An instrument used to record an echogram. | - |
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| 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 |
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| echolalia | (noun) (psychiatry) mechanical and meaningless repetition of the words of another person (as in schizophrenia) | - |
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| (noun) an infant's repetition of sounds uttered by others | - |
| echolocation | (noun) determining the location of something by measuring the time it takes for an echo to return from it | Synonyms: echo sounding |
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| echovirus | (noun) any of a group of viruses associated with various diseases including viral meningitis and mild respiratory disorders and diarrhea in newborn infants | - |
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| enchondroma | (noun) benign slow-growing tumor of cartilaginous cells at the ends of tubular bones (especially in the hands and feet) | - |
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| eunuchoidism | (noun) the state of being a eunuch (either because of lacking testicles or because they failed to develop) | Synonyms: male hypogonadism |
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| gaucho | (noun) a cowboy of the South American Pampas | - |
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| gazpacho | (noun) a soup made with chopped tomatoes and onions and cucumbers and peppers and herbs; served cold | - |
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| harpsichord | (noun) a clavier with strings that are plucked by plectra mounted on pivots | Synonyms: cembalo |
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| harpsichordist | (noun) someone who plays the harpsichord | - |
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| highschool | (noun) a public secondary school usually including grades 9 through 12 | Synonyms: high, high school, senior high, senior high school |
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| hogchoker | (noun) useless as food; in coastal streams from Maine to Texas and Panama | Synonyms: Trinectes maculatus |
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| honcho | (noun) a person who exercises control over workers | Synonyms: boss, chief, foreman, gaffer |
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| hypercholesteremia | (noun) the presence of an abnormal amount of cholesterol in the cells and plasma of the blood; associated with the risk of atherosclerosis | Synonyms: hypercholesterolemia |
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| hypercholesterolemia | (noun) the presence of an abnormal amount of cholesterol in the cells and plasma of the blood; associated with the risk of atherosclerosis | Synonyms: hypercholesteremia |
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| hypochondria | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondriasis |
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| hypochondriac | (noun) a patient with imaginary symptoms and ailments | - |
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| hypochondriasis | (noun) chronic and abnormal anxiety about imaginary symptoms and ailments | Synonyms: hypochondria |
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| hypochondrium | (noun) the upper region of the abdomen just below the lowest ribs on either side of the epigastrium | - |
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| ichor | (noun) a fluid product of inflammation | Synonyms: festering, purulence, pus, sanies, suppuration |
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| (noun) (Greek mythology) the rarified fluid said to flow in the veins of the Gods | - |
| inchoative | (noun) aspect with regard to the beginning of the action of the verb | Synonyms: inchoative aspect |
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| kinetochore | (noun) a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape | Synonyms: centromere |
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| lambchop | (noun) chop cut from a lamb | Synonyms: lamb-chop, lamb chop |
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| lipochondrodystrophy | (noun) hereditary disease (autosomal recessive) consisting of an error is mucopolysaccharide metabolism; characterized by severe abnormalities in development of skeletal cartilage and bone and mental retardation | Synonyms: dysostosis multiplex, gargoylism, Hurler's disease, Hurler's syndrome |
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| macho | (noun) a male exhibiting or characterized by machismo | - |
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| mantichora | (noun) a mythical monster having the head of man (with horns) and the body of a lion and the tail of a scorpion | Synonyms: manticora, manticore, mantiger |
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| melancholia | (noun) extreme depression characterized by tearful sadness and irrational fears | - |
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| melancholiac | (noun) someone subject to melancholia | Synonyms: melancholic |
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| melancholic | (noun) someone subject to melancholia | Synonyms: melancholiac |
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| melancholy | (noun) a humor that was once believed to be secreted by the kidneys or spleen and to cause sadness and melancholy | Synonyms: black bile |
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| (noun) a feeling of thoughtful sadness | - |
| (noun) a constitutional tendency to be gloomy and depressed | - |
| metempsychosis | (noun) after death the soul begins a new cycle of existence in another human body | Synonyms: rebirth |
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| methacholine | (noun) parasympathomimetic drug (trademark Mecholyl) that stimulates secretions and smooth muscle activity | Synonyms: Mecholyl |
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| mitochondrion | (noun) an organelle containing enzymes responsible for producing energy | Synonyms: chondriosome |
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| mummichog | (noun) silver-and-black killifish of saltwater marshes along the Atlantic coast of the United States | Synonyms: Fundulus heteroclitus |
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| nacho | (noun) a tortilla chip topped with cheese and chili-pepper and broiled | - |
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| neuropsychology | (noun) the branch of psychology that is concerned with the physiological bases of psychological processes | Synonyms: physiological psychology, psychophysiology |
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| notochord | (noun) a flexible rodlike structure that forms the supporting axis of the body in the lowest chordates and lowest vertebrates and in embryos of higher vertebrates | - |
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| onchocerciasis | (noun) infestation with slender threadlike roundworms (filaria) deposited under the skin by the bite of black fleas; when the eyes are involved it can result in blindness; common in Africa and tropical America | Synonyms: river blindness |
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| onycholysis | (noun) separation of a nail from its normal attachment to the nail bed | - |
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| onychophoran | (noun) any of numerous velvety-skinned wormlike carnivorous animals common in tropical forests having characteristics of both arthropods and annelid worms | Synonyms: peripatus, velvet worm |
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| onychosis | (noun) any disease or disorder of the nails | - |
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| orchotomy | (noun) surgical incision into the testis to obtain material for analysis (as in cases of abnormally low sperm count) | - |
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| orthochorea | (noun) a form of chorea in which spasms occur mainly when the patient is erect | - |
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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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| pachouli | (noun) a heavy perfume made from the patchouli plant | Synonyms: patchouli, patchouly |
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| (noun) small East Indian shrubby mint; fragrant oil from its leaves is used in perfumes | Synonyms: patchouli, patchouly, Pogostemon cablin |
| pakchoi | (noun) Asiatic plant grown for its cluster of edible white stalks with dark green leaves | Synonyms: bok choi, bok choy, Brassica rapa chinensis, Chinese white cabbage, pak choi |
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| parapsychologist | (noun) someone who studies the evidence for such psychological phenomena as psychokinesis and telepathy and clairvoyance | - |
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| parapsychology | (noun) phenomena that appear to contradict physical laws and suggest the possibility of causation by mental processes | Synonyms: psychic phenomena, psychic phenomenon |
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| patchouli | (noun) a heavy perfume made from the patchouli plant | Synonyms: pachouli, patchouly |
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| (noun) small East Indian shrubby mint; fragrant oil from its leaves is used in perfumes | Synonyms: pachouli, patchouly, Pogostemon cablin |
| patchouly | (noun) a heavy perfume made from the patchouli plant | Synonyms: pachouli, patchouli |
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| (noun) small East Indian shrubby mint; fragrant oil from its leaves is used in perfumes | Synonyms: pachouli, patchouli, Pogostemon cablin |
| playschool | (noun) a small informal nursery group meeting for half-day sessions | Synonyms: play group |
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| poncho | (noun) a blanket-like cloak with a hole in the center for the head | - |
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| porkchop | (noun) chop cut from a hog | - |
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| preschool | (noun) an educational institution for children too young for elementary school | - |
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| preschooler | (noun) a child who attends a preschool or kindergarten | Synonyms: kindergartener, kindergartner |
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| psycho | (noun) a person afflicted with psychosis | Synonyms: psychotic, psychotic person |
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| psychoanalysis | (noun) a set of techniques for exploring underlying motives and a method of treating various mental disorders; based on the theories of Sigmund Freud | Synonyms: analysis, depth psychology |
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| psychoanalyst | (noun) a licensed practitioner of psychoanalysis | Synonyms: analyst |
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| psychobabble | (noun) using language loaded with psychological terminology | - |
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| psychodid | (noun) a fly of the family Psychodidae | - |
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| psychodynamics | (noun) the branch of social psychology that deals with the processes and emotions that determine psychology and motivation | - |
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| (noun) the interrelation of conscious and unconscious processes and emotions that determine personality and motivation | - |
| psychogenesis | (noun) a general term for the origin and development of almost any aspect of the mind | - |
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| (noun) the development in the life of an individual of some disorder that is caused by psychological rather than physiological factors | - |
| psychographics | (noun) market research or statistics classifying population groups according to psychological variables (as attitudes, values, or fears); also: variables or trends identified through such research. | - |
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| psychokinesis | (noun) the power to move something by thinking about it without the application of physical force | Synonyms: telekinesis |
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