British thermal unit

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1. a single thing; one segment of a whole that is made up of identical or similar segments.
2. a specifically defined amount of anything subject to measurement, as of activity, dimension, velocity, volume, or the like.
3. a distinct part of a hospital, usually having a specific physical location and serving a defined function; see under names of specific units.
Ångström unit angstrom.
atomic mass unit (u) (amu) the unit of mass equal to ¹⁄₁₂ the mass of the nuclide of carbon 12. Called also dalton.
autonomous nursing unit a nursing unit under a decentralized administration system in which the staff is responsible for all aspects of unit functioning.
British thermal unit (BTU) a unit of heat formerly widely used, being the amount necessary to raise the temperature of 1 pound of water from 39° to 40°F., equal to approximately 252 calories.
CH50 unit the amount of complement that will lyse 50 per cent of a standard preparation of sheep red blood cells coated with antisheep erythrocyte antibody.
continuing education unit (CEU) a unit of credit for educational offerings given to professional persons, determined by a professional organization according to a mathematical formula after a thorough review of the program of study, the qualifications of the instructors, and the program objectives.
critical care unit intensive care unit.
electrostatic u's (esu) that system of units that is based on the fundamental definition of a unit charge as one that will repel a similar charge with a force of 1 dyne when the two charges are 1 cm apart in a vacuum.
environmental control unit a computerized system that allows the handicapped individual to operate several different appliances using a keyboard or other input device.
heat unit the amount of heat energy that is produced by one kVp (kilovolt peak) and one mA (milliampere) for one second with single phase, full wave rectified radiographic equipment.
Hounsfield unit an arbitrary unit of x-ray attenuation used for CT scans. Each voxel is assigned a value on a scale in which air has a value of −1000; water, 0; and compact bone, +1000.
intensive care unit see intensive care unit.
International unit (IU)
1. a unit of enzyme activity equal to the amount of enzyme that catalyzes the conversion of one micromole of substrate or coenzyme per minute under specified conditions (temperature, pH, and substrate concentration) of the assay method. Abbreviated U.
2. any of several arbitrary units that have been adopted by international bodies to express the quantities of certain vitamins (A, C, D, and thiamine hydrochloride), hormones (androgen, chorionic gonadotropin, estradiol benzoate, estrone, insulin, progesterone, and prolactin), and drugs (digitalis and penicillin).
Kienböck's unit a unit of x-ray exposure equal to 0.1 erythema dose; symbol X.
motor unit the unit of motor activity formed by a motor nerve cell and its many innervated muscle fibers.
postanesthesia care unit (PACU) a specialty unit in a hospital for giving postanesthesia care (care of patients recovering from anesthesia and intravenous sedation); formerly called recovery room.
radiologic u's units used to measure radiation, including roentgens, rads, rems, and curies.
u's of service (UOS)
1. the number of procedures done by a department.
2. individuals or groups of individuals who are the recipients of nursing care.
short procedures unit (short term care unit) a nursing unit where patients are briefly cared for following a medical or surgical procedure and are then discharged without spending the night.
SI unit any unit of the International System of units (the metric system); see also si units.
step-down unit a nursing unit designated to provide care for patients who are stable enough to be discharged from the intensive care unit but are not yet ready to be cared for on a medical-surgical unit.
Svedberg unit (S) a unit equal to 10−13 second used for expressing sedimentation coefficients of macromolecules.
Svedberg flotation unit (Sf) a unit equal to 10−13 second used for expressing negative sedimentation coefficients of macromolecules that float rather than sink in a centrifuge, e.g., lipoproteins.
terminal respiratory unit the functional unit of the lung, including a respiratory bronchiole, alveolar ducts and sacs, and alveoli; called also primary lobule of lung and primary respiratory lobule.
USP unit one used in the United States Pharmacopeia for expressing potency of drugs and other preparations.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

Brit·ish ther·mal u·nit (BTU),

the quantity of heat required to raise 1 lb of water from 3.9°C to 4.4°C; equal to 251.996 calorie or 1055.056 J.
Synonym(s): unit of heat (2)
Farlex Partner Medical Dictionary © Farlex 2012

British Thermal Unit

An obsolete unit, equal to 252 calories or 1055 Joules, for the amount of energy needed to raise the temperature of one pound of water by one degree Fahrenheit.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

British Thermal Unit

A unit of energy–equal to 252 calories or 1055 Joules needed to raise one pound of water by one degree Fahrenheit
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

Brit·ish ther·mal u·nit

(BTU) (brit'ish thĕr'măl yū'nit)
The quantity of heat required to raise 1 pound of water from 3.9-4.4°C; equal to 251.996 calories or to 1055.056 joules.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
References in periodicals archive ?
A levelized tariff of $0.66 per million British thermal units (MMBtu) had been paid by Fatima Fertilizer, but according to SSGC it needed to pay $1.45 per MMBtu as per an accord approved by regulator.
The project will save 5.6 trillion British Thermal Units (BTUs) of natural gas each year and reduce CO2 emissions by over 300,000 tons annually.
Woodside is responding to market forces," JPMorgan analyst Ben Wilson said in a note.Woodside said the deal to buy 850,000 tonnes a year of LNG from Cheniere's proposed Corpus Christi LNG plant over 20 years starting in 2019 was part of a strategy to diversify the company's sources of gas and build its trading capability.The gas from Cheniere will be priced at 115 per cent of the monthly Henry Hub price plus $3.50 per million British thermal units (Btu), which Woodside said was in line with contracts with other buyers from the Corpus Christi project.
He said that all the gas consuming sectors were paying Rs 100 as GIDC for consuming one million British Thermal Units (mmbtu) while the CNG sector was paying Rs 200 for the same which was discrimination.
A source at the Ministry of Petroleum said it would cost $1.25 to convert one million British thermal units from liquefied gas to gas.
The EIA said in a new report that the US and Russia, total petroleum and natural gas hydrocarbon production, "in energy content terms, is almost evenly split between petroleum and natural gas," while Saudi Arabia's production" heavily favors petroleum." The report indicated that since 2008, US petroleum production has increased seven quadrillion Btu (British thermal units) with "dramatic" growth in Texas and North Dakota.
In Saudi Arabia, the world's biggest oil producer, gas costs about 75 cents a million British thermal units. Spot prices for LNG cargoes to Asia last month reached $17 a million British thermal units, according to World Gas
at a price of USD6.50 per thousand British Thermal Units, which includes the associated liquids, those being naphtha, propane and butane.
Henry Hub natural gas prices added 3.5 cents to $4.447 per million British thermal units.
The prices have been raised following the cabinet decision to more- than- double the price of natural gas to $ 4.20 per million British thermal units ( mmBtu) as Oil and Natural Gas Corp ( ONGC) and Oil India Ltd ( OIL) were losing money on gas sales at the price of at less than $ 2 per mmBtu.
Prices of the cleaner-burning fuel have increased sevenfold in the last five years to a record $20 per million British thermal units while the rate of global project approvals last year missed forecasts, adding to concerns that supply will be insufficient to meet demand.

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