| boil | 1. To heat to the boiling point, or so as to cause ebullition; as, to boil water. 2. To form, or separate, by boiling or evaporation; as, to boil sugar or salt. 3. To subject to the action of heat in a boiling liquid so as to produce some specific effect, as cooking, cleansing, etc.; as, to boil meat; to boil clothes. "The stomach cook is for the hall, And boileth meate for them all." (Gower) 4. To steep or soak in warm water. "To try whether seeds be old or new, the sense can not inform; but if you boil them in water, the new seeds will sprout sooner." (Bacon) To boil down, to reduce in bulk by boiling; as, to boil down sap or sirup. 1. To be agitated, or tumultuously moved, as a liquid by the generation and rising of bubbles of steam (or vapor), or of currents produced by heating it to the boiling point; to be in a state of ebullition; as, the water boils. 2. To be agitated like boiling water, by any other cause than heat; to bubble; to effervesce; as, the boiling waves. "He maketh the deep to boil like a pot." (Job xii. 31) 3. To pass from a liquid to an aeriform state or vapor when heated; as, the water boils away. 4. To be moved or excited with passion; to be hot or fervid; as, his blood boils with anger. "Then boiled my breast with flame and burning wrath." (Surrey) 5. To be in boiling water, as in cooking; as, the potatoes are boiling. To boil away, to vaporize; to evaporate or be evaporated by the action of heat. To boil over, to run over the top of a vessel, as liquid when thrown into violent agitation by heat or other cause of effervescence; to be excited with ardor or passion so as to lose self-control. Origin: OE. Boilen, OF. Boilir, builir, F. Bouillir, fr. L. Bullire to be in a bubbling motion, from bulla bubble; akin to Gr, Lith. Bumbuls. Cf. Bull an edict, Budge, v, and Ebullition. A hard, painful, inflamed tumour, which, on suppuration, discharges pus, mixed with blood, and discloses a small fibrous mass of dead tissue, called the core. A blind boil, one that suppurates imperfectly, or fails to come to a head. <medicine> Delhi boil, a peculiar affection of the skin, probably parasitic in origin, prevailing in India (as among the British troops) and especially at Delhi. Origin: Influenced by boil, v. See Beal, Bile. Source: Websters Dictionary (01 Mar 1998) |
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| boiler | 1. One who boils. 2. A vessel in which any thing is boiled. The word boiler is a generic term covering a great variety of kettles, saucepans, clothes boilers, evaporators, coppers, retorts, etc. 3. <mechanics> A strong metallic vessel, usually of wrought iron plates riveted together, or a composite structure variously formed, in which steam is generated for driving engines, or for heating, cooking, or other purposes. The earliest steam boilers were usually spheres or sections of spheres, heated wholly from the outside. Watt used the wagon boiler (shaped like the top of a covered wagon) which is still used with low pressures. most of the boilers in present use may be classified as plain cylinder boilers, flue boilers, sectional and tubular boilers. Barrel of a boiler, the cylindrical part containing the flues. Boiler plate, Boiler iron, plate or rolled iron of about a quarter to a half inch in thickness, used for making boilers and tanks, for covering ships, etc. Cylinder boiler, one which consists of a single iron cylinder. Flue boilers are usually single shells containing a small number of large flues, through which the heat either passes from the fire or returns to the chimney, and sometimes containing a fire box inclosed by water. Locomotive boiler, a boiler which contains an inclosed fire box and a large number of small flues leading to the chimney. Multiflue boiler. Same as Tubular boiler, below. Sectional boiler, a boiler composed of a number of sections, which are usually of small capacity and similar to, and connected with, each other. By multiplication of the sections a boiler of any desired capacity can be built up. Tubular boiler, a boiler containing tubes which form flues, and are surrounded by the water contained in the boiler. Source: Websters Dictionary (01 Mar 1998) |
| boiler horsepower | A measure of the maximum rate of heat energy output of a steam generator. One boiler horsepower equals 33,480 Btu/hr output in steam. (05 Dec 1998) |
| boilermaker's deafness | Sensorineural hearing loss due to overexposure to high intensity noise levels. Synonym: boilermaker's deafness, industrial deafness, occupational deafness. (05 Mar 2000) |
| boiling | Heated to the point of bubbling; heaving with bubbles; in tumultuous agitation, as boiling liquid; surging; seething; swelling with heat, ardor, or passion. Boiling point, the temperature at which a fluid is converted into vapor, with the phenomena of ebullition. This is different for different liquids, and for the same liquid under different pressures. For water, at the level of the sea, barometer 30 in, it is 212 deg Fahrenheit; for alcohol.96 deg; for ether.8 deg; for mercury, about 675 deg . The boiling point of water is lowered one degree Fahrenheit for about 550 feet of ascent above the level of the sea. Boiling spring, a spring which gives out very hot water, or water and steam, often ejecting it with much force; a geyser. To be at the boiling point, to be very angry. To keep the pot boiling, to keep going on actively, as in certain games. Source: Websters Dictionary (01 Mar 1998) |
| boiling point | This is the temperature at which the vapor pressure of a given liquid reaches atmospheric pressure (and thus starts to boil). (09 Oct 1997) |
| boiling point elevation | This is the phenomenon of increasing the temperature at which a liquid boils by dissolving another substance in the liquid (for example: you can raise the temperature at which water boils by adding salt to it). (09 Oct 1997) |
| boiling water reactor | <radiobiology> Class of fission reactor where water is used as a coolant and allowed to boil into steam. (09 Oct 1997) |
| boils | A Staphylococcal skin infection which involves a hair follicle, often referred to as a boil or a furuncle. A group of boils is known as a carbuncle. Symptoms and findings include a tender pea-sized (or larger), red nodule, may ooze pus or weep. Treatment includes warm, wet compresses several times a day. Oral or topical antibiotics may be indicated in some cases. (27 Sep 1997) |
| Aleppo boil | The lesion occurring in cutaneous leishmaniasis. See: cutaneous leishmaniasis Synonym: Biskra boil. (05 Mar 2000) |
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| Biskra boil | The lesion occurring in cutaneous leishmaniasis. See: cutaneous leishmaniasis Synonym: Biskra boil. (05 Mar 2000) |
| blind boil | A furuncle that does not have a fluctuant central point; it appears as a dull red painful papule. (05 Mar 2000) |
| Madura boil | 1. A chronic infection involving the feet and characterised by the formation of localised lesions with tumefactions and multiple draining sinuses. The exudate contains granules that may be yellow, white, red, brown, or black, depending upon the causative agent. Mycetoma is caused by two principal groups of microorganisms: A. Actinomycotic mycetoma is caused by actinomycetes, including species of Streptomyces, Actinomadurae, and Nocardia. B. Eumycotic mycetoma is caused by true fungi, including species of Madurella, Exophiala, Pseudallescheria, Curvularia, Neotestudina, Pyrenochaeta, Aspergillus, Leptosphaeria, Plemodomus, Polycytella, Fusarium, Phialophora, Corynespora, Cylindrocarpon, Pseudochaetosphaeronema, Bipolaris, and Acremonium. Synonym: fungous foot, Madura boil, Madura foot, maduromycosis. 2. Any tumour with draining sinuses produced by filamentous fungi. (05 Mar 2000) |
| shoe boil | Olecranoid bursitis in the horse; so called because it may be caused by trauma from the shoe in the recumbent animal. Synonym: capped elbow. (05 Mar 2000) |
| date boil | The lesion occurring in cutaneous leishmaniasis. (05 Mar 2000) |
| Oriental boil | The lesion occurring in cutaneous leishmaniasis. (05 Mar 2000) |
| tropical boil | <dermatology> The lesion occurring in cutaneous leishmaniasis. (05 Mar 2000) |