| accelerometer | (noun) an instrument for measuring the acceleration of aircraft or rockets | - |
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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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| achromaticity | (noun) the visual property of being without chromatic color | Synonyms: achromatism, colorlessness, colourlessness |
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| achromatin | (noun) the part of a cell nucleus that is relatively uncolored by stains or dyes | - |
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| achromatism | (noun) the visual property of being without chromatic color | Synonyms: achromaticity, colorlessness, colourlessness |
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| achromia | (noun) an absence of normal pigmentation especially in the skin (as in albinism) or in red blood cells | - |
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| acromegalia | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegaly |
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| acromegaly | (noun) enlargement of bones of hands and feet and face; often accompanied by headache and muscle pain and emotional disturbances; caused by overproduction of growth hormone by the anterior pituitary gland (due to a tumor) | Synonyms: acromegalia |
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| acromicria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromikria |
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| acromikria | (noun) abnormally small extremities (underdeveloped fingers and toes) | Synonyms: acromicria |
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| acromion | (noun) the outermost point of the spine of the shoulder blade | Synonyms: acromial process |
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| acromphalus | (noun) abnormal protrusion of the navel; sometimes the start of umbilical hernia | - |
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| acromyotonia | (noun) myotonia of the extremities only; causes spastic deformity of the hand or foot | - |
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| aerodrome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: airdrome, airport, drome |
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| aeromechanics | (noun) the branch of mechanics that deals with the motion of gases (especially air) and their effects on bodies in the flow | Synonyms: aerodynamics |
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| aeromedicine | (noun) the study and treatment of disorders associated with flight (especially with space flight) | Synonyms: aerospace medicine, aviation medicine |
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| agromania | (noun) an intense desire to be alone or out in the open | - |
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| airdrome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: aerodrome, airport, drome |
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| andromeda | (noun) any of several shrubs of the genus Andromeda having leathery leaves and clusters of small flowers | - |
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| (noun) broad-leaved evergreen Asiatic shrub with glossy leaves and drooping clusters of white flowers | Synonyms: Japanese andromeda, lily-of-the-valley tree, Pieris japonica |
| angstrom | (noun) a metric unit of length equal to one ten billionth of a meter (or 0.0001 micron); used to specify wavelengths of electromagnetic radiation | Synonyms: A, angstrom unit |
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| antiferromagnet | (noun) any material that has antiferromagnetic properties. | - |
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| antiferromagnetism | (noun) magnetic field creates parallel but opposing spins; varies with temperature | - |
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| aroma | (noun) any property detected by the olfactory system | Synonyms: odor, odour, olfactory property, scent, smell |
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| (noun) a distinctive odor that is pleasant | Synonyms: fragrance, perfume, scent |
| aromatherapy | (noun) the therapeutic use of aromatic plant extracts and essential oils in baths or massage | - |
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| aromaticity | (noun) The property of having an aroma. | - |
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| arthromere | (noun) any of the segments in the body of a jointed animal like an arthropod | - |
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| astrometry | (noun) the branch of astronomy that deals with the measurement of the position and motion of celestial bodies | - |
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| atheroma | (noun) a fatty deposit in the intima (inner lining) of an artery; can obstruct blood flow | - |
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| azithromycin | (noun) a systemic antibacterial medicine (trade name Zithromax) that is prescribed to treat bacterial infections in many different parts of the body | Synonyms: Zithromax |
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| barometer | (noun) an instrument that measures atmospheric pressure | - |
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| bichromate | (noun) a salt of the hypothetical dichromic acid | Synonyms: dichromate |
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| bromance | (noun) non-sexual but intense relationship between two men | - |
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| bromate | (noun) a chemical compound that contains the bromate ion. | - |
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| brome | (noun) any of various woodland and meadow grasses of the genus Bromus; native to temperate regions | Synonyms: bromegrass |
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| bromegrass | (noun) any of various woodland and meadow grasses of the genus Bromus; native to temperate regions | Synonyms: brome |
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| bromeosin | (noun) a red fluorescent dye resulting from the action of bromine on fluorescein; used in cosmetics and as a biological stain for studying cell structures | Synonyms: eosin |
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| bromide | (noun) a trite or obvious remark | Synonyms: banality, cliche, commonplace, platitude |
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| (noun) any of the salts of hydrobromic acid; formerly used as a sedative but now generally replaced by safer drugs | - |
| bromine | (noun) a nonmetallic heavy volatile corrosive dark brown liquid element belonging to the halogens; found in sea water | Synonyms: atomic number 35, Br |
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| bromoform | (noun) colorless liquid haloform CHBr3 | Synonyms: tribromomethane |
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| bromoil | (noun) a print made by the bromoil process having soft, paint-like qualities. | - |
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| carom | (noun) a shot in billiards in which the cue ball contacts one object ball and then the other | Synonyms: cannon |
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| (noun) a glancing rebound | Synonyms: ricochet |
| centromere | (noun) a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape | Synonyms: kinetochore |
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| cerebromeningitis | (noun) inflammation of the brain and spinal cord and their meninges | Synonyms: encephalomeningitis, meningoencephalitis |
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| chiromancer | (noun) fortuneteller who predicts your future by the lines on your palms | Synonyms: palmist, palmister |
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| chiromancy | (noun) telling fortunes by lines on the palm of the hand | Synonyms: chirology, palm reading, palmistry |
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| chlorpromazine | (noun) a drug (trade name Thorazine) derived from phenothiazine that has antipsychotic effects and is used as a sedative and tranquilizer | Synonyms: Thorazine |
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| chondroma | (noun) a common benign tumor of cartilage cells | - |
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| chroma | (noun) chromatic purity: freedom from dilution with white and hence vivid in hue | Synonyms: intensity, saturation, vividness |
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| chromaesthesia | (noun) a form of synesthesia in which nonvisual stimulation results in the experience of color sensations | Synonyms: chromesthesia |
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| chromate | (noun) any salt or ester of chromic acid | - |
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| chromaticity | (noun) the quality of a color as determined by its dominant wavelength | Synonyms: hue |
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| chromatid | (noun) one of two identical strands into which a chromosome splits during mitosis | - |
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| chromatin | (noun) the readily stainable substance of a cell nucleus consisting of DNA and RNA and various proteins; during mitotic division it condenses into chromosomes | Synonyms: chromatin granule |
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| chromatism | (noun) abnormal pigmentation | - |
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| (noun) hallucinatory perception of colored lights | - |
| chromatogram | (noun) the recording (column or paper strip) on which the constituents of a mixture are adsorbed in chromatography | - |
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| chromatograph | (noun) equipment that enables a sophisticated separation, e.g. gas chromatographic or liquid chromatographic separation. | - |
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| chromatography | (noun) a process used for separating mixtures by virtue of differences in absorbency | - |
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| chrome | (noun) another word for chromium when it is used in dyes or pigments | - |
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| chromesthesia | (noun) a form of synesthesia in which nonvisual stimulation results in the experience of color sensations | Synonyms: chromaesthesia |
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| chromite | (noun) a brownish-black mineral; the major source of chromium | - |
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| chromium | (noun) a hard brittle multivalent metallic element; resistant to corrosion and tarnishing | Synonyms: atomic number 24, Cr |
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| chromoblastomycosis | (noun) a fungal infection characterized by itchy warty nodules on the skin | - |
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| chromogen | (noun) a compound that can be converted to a pigment | - |
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| chromolithograph | (noun) a print made by chromolithography. | - |
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| chromolithography | (noun) single- or multi-color lithography | - |
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| chromophore | (noun) the chemical group that gives color to a molecule | - |
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| chromoplast | (noun) plastid containing pigments other than chlorophyll usually yellow or orange carotenoids | - |
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| chromosome | (noun) a threadlike strand of DNA in the cell nucleus that carries the genes in a linear order | - |
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| chromosphere | (noun) a gaseous layer of the sun's atmosphere (extending from the photosphere to the corona) that is visible during a total eclipse of the sun | - |
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| compromise | (noun) a middle way between two extremes | Synonyms: via media |
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| (noun) an accommodation in which both sides make concessions | - |
| compromiser | (noun) a negotiator willing to compromise | - |
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| cothromboplastin | (noun) a coagulation factor formed in the kidney under the influence of vitamin K | Synonyms: factor VII, proconvertin, stable factor |
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| cromlech | (noun) a prehistoric megalithic tomb typically having two large upright stones and a capstone | Synonyms: dolmen, portal tomb |
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| cromorne | (noun) a Renaissance woodwind with a double reed and a curving tube (crooked horn) | Synonyms: crumhorn, krummhorn |
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| cytochrome | (noun) (biochemistry) a class of hemoprotein whose principal biological function is electron transfer (especially in cellular respiration) | - |
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| diapheromera | (noun) a variety of stick insect | Synonyms: Diapheromera femorata |
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| dichloromethane | (noun) a nonflammable liquid used as a solvent and paint remover and refrigerant | Synonyms: methylene chloride |
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| dichromacy | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromasy, dichromatism, dichromatopsia, dichromia |
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| dichromasy | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromatism, dichromatopsia, dichromia |
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| dichromat | (noun) a person with any of the various forms of dichromacy | - |
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| dichromate | (noun) a salt of the hypothetical dichromic acid | Synonyms: bichromate |
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| dichromatism | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatopsia, dichromia |
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| dichromatopsia | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatism, dichromia |
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| dichromia | (noun) a deficiency of color vision in which the person can match any given hue by mixing only two other wavelengths of light (as opposed to the three wavelengths needed by people with normal color vision) | Synonyms: dichromacy, dichromasy, dichromatism, dichromatopsia |
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| dromaeosaur | (noun) a kind of maniraptor | - |
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| drome | (noun) an airfield equipped with control tower and hangars as well as accommodations for passengers and cargo | Synonyms: aerodrome, airdrome, airport |
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| dromedary | (noun) one-humped camel of the hot deserts of northern Africa and southwestern Asia | Synonyms: Arabian camel, Camelus dromedarius |
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| durometer | (noun) An instrument for measuring the degree of hardness; especially, an instrument for testing the relative hardness of steel rails and the like. | - |
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| electromagnet | (noun) a temporary magnet made by coiling wire around an iron core; when current flows in the coil the iron becomes a magnet | - |
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| electromagnetics | (noun) the branch of physics concerned with electromagnetic phenomena | Synonyms: electromagnetism |
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| electromagnetism | (noun) the branch of physics concerned with electromagnetic phenomena | Synonyms: electromagnetics |
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| (noun) magnetism produced by an electric current | - |
| electrometer | (noun) meter to measure electrostatic voltage differences; draws no current from the source | - |
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| electromyogram | (noun) a graphical record of electric currents associated with muscle contractions | Synonyms: EMG |
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| electromyograph | (noun) a medical instrument that records the electrical waves associated with the activity of skeletal muscles | - |
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| electromyography | (noun) diagnosis of neuromuscular disorders with the use of an electromyograph | - |
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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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| erythromycin | (noun) an antibiotic (trade name Erythrocin or E-Mycin or Ethril or Ilosone or Pediamycin) obtained from the actinomycete Streptomyces erythreus; effective against many Gram-positive bacteria and some Gram-negative | Synonyms: E-Mycin, Erythrocin, Ethril, Ilosone, Pediamycin |
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| evaporometer | (noun) an instrument that measures rate of evaporation of water | Synonyms: atmometer |
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| ferromagnet | (noun) any material that has ferromagnetic properties. | - |
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| ferromagnetism | (noun) phenomenon exhibited by materials like iron (nickel or cobalt) that become magnetized in a magnetic field and retain their magnetism when the field is removed | - |
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