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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.


Theodor, Swedish chemist and Nobel laureate, 1884-1971. See: Svedberg equation, Svedberg of flotation, Svedberg unit.


/sved·berg/ (sfed´berg) Svedberg unit.


a unit used to express sedimentation coefficients. Symbol S.
References in periodicals archive ?
Five minutes elapsed before Svedberg was called on to make a save.
Svedberg, playing for the first time in nine days and the fifth time since the calendar flipped to 2015, made 23 saves.
He is taking up his position as from May 1 and he is succeeding Claes Svedberg who has taken on a position as Vice President for the Alliance Office and will be located at AB Volvo headquarter in Goteborg, Sweden.
The Bruins went with Niklas Svedberg due to a compressed schedule that had them playing twice in 24 hours and the fact Tuukka Rask had played 21 of the past 22 games, a stretch that began Jan.
On the Azerbaijani side, the monitoring will be carried out by the OSCE Chairperson-in-Office Personal Representative, Andrzej Kasprzyk and his field assistants Evgeny Sharov and Peter Svedberg.
For the nomination committee, the following five are proposed; Bengt Belfrage, Nordea fonder, Christer Elmehagen, AMF Pension, Curt Kallstromer, Handelsbankens Pensionsstiftelse, Pensionskassa and Personalstiftelse, Bjorn Svedberg, Investor, and Michael Treschow as members of the nomination committee until the end of the Annual General Meeting in 2006.
On the Azerbaijani side, the monitoring will be carried out by the field assistants of the OSCE Chairperson-in-Office Personal Representative, Evgeny Sharov and Peter Svedberg.
Regarding the election of members of the nominations committee and determination of the fee to the committee, the company has received proposals for appointment of the following five members; Bengt Belfrage, Nordea Fonder, Christer Elmehagen, AMF Pension, Anders Nyren, Industrivarden, Bjorn Svedberg, Investor, and Michael Treschow as members of the nomination committee until the end of the annual general meeting in 2004.
Niklas Svedberg had 29 saves starting for the ailing Tuukka Rask, who had played in Boston's last 18 games.
On the Azerbaijani side the monitoring will be carried out by the field assistants of the Personal Representative of the OSCE Chairperson-in-Office, Peter Svedberg and Hristo Hristov, as well as the OSCE High-Level Planning Group representative, Colonel Ilhami Degirmencioglu (Turkey).
We are confident that this extended partnership will allow Tele2 to successfully take the great mobile market opportunity in the Russian Federation" said Johnny Svedberg, Executive Vice President and Market Area Director Tele2 Eastern Europe and Russia.
Rask was supposed to have the night off, but he replaced Svedberg in goal for the start of the second period after Dallas scored on three of its 10 shots in the opening period to take a 3-1 lead.