an individual thing or person regarded as single and complete but which can also form an individual component of a larger or more complex whole
a fundamental unit that is defined arbitrarily and not by combinations of other units. The base units of the SI system are the meter, kilogram, second, ampere, kelvin, mole, and candela
a flat, especially one occupied by the owner, that is one of several in a large building
the smallest group of atoms of a substance that has the overall symmetry of a crystal of that substance, and from which the entire lattice can be built up by repetition in three dimensions
a piece of furniture having various sections, typically shelves and cabinets, designed to stand against a wall
a unit of measurement for the total amount of ozone in the atmosphere above a point on the earth’s surface, one Dobson unit being equivalent to a layer of pure ozone 0.01 mm thick at standard temperature and pressure
an individual, or a group or community, considered as a discrete constituent of a society or larger group
denoting or relating to a life assurance policy or other investment in which the premiums or payments are invested in a unit trust
a unit of measurement that is defined in terms of the fundamental units of a system (mass, length, and time) and is not based on arbitrary definitions
an apparatus in the electrical supply at the point it enters a domestic property, which contains devices such as a switch and circuit-breakers
a diesel or electric passenger train of two or more carriages powered by integral motors which drive a number of axles throughout the train
a lipoprotein membrane that encloses many cells and cell organelles and is composed of two electron-dense layers enclosing a less dense layer
identification of and labeling of items for sale with the retail price per unit, permitting easier price comparisons among similar products in different sized containers
a unit of measurement equal to 149.6 million kilometers, the mean distance from the center of the earth to the center of the sun
one of a set of unrelated units of measurement, which are arbitrarily defined and from which other units are derived. For example, in the SI system the fundamental units are the meter, kilogram, and second
a unit of activity or potency for vitamins, hormones, or other substances, defined individually for each substance in terms of the activity of a standard quantity or preparation
a unit of mass used to express atomic and molecular weights, equal to one-twelfth of the mass of an atom of carbon-12. It is equal to approximately 1.66 x 10-27 kg
a hospital department that provides special care and monitoring for heart patients
a unit in a computer that carries out arithmetic and logical operations
the amount of heat needed to raise one pound of water at maximum density through one degree Fahrenheit, equivalent to 1.055 × 103 joules
a unit used in expressing the detected flux of neutrinos from the sun, equal to 1036 neutrino captures per target atom per second
a device for displaying input signals as characters on a screen
an electrically operated device fitted to the waste pipe of a kitchen sink for grinding up food waste
the part of a computer in which operations are controlled and executed
a relatively autonomous division of a large company that operates as an independent enterprise with responsibility for a particular range of products or activities
a unit of length equal to one hundred-millionth of a centimeter, 1010 meter, used mainly to express wavelengths and interatomic distances
a unit of time equal to 1013 seconds, used in expressing sedimentation coefficients
a system of physical units (SI Units) based on the meter, kilogram, second, ampere, kelvin, candela, and mole, together with a set of prefixes to indicate multiplication or division by a power of ten
a unit used to express electric dipole moments of molecules. One debye is equal to 3.336 × 1030 coulomb meter
a unit of length equal to one hundred-millionth of a centimeter, 1010 meter, used mainly to express wavelengths and interatomic distances
a unit of time equal to 1013 seconds, used in expressing sedimentation coefficients
a system of units based primarily on the forces between electric charges
a largely obsolete system of electrical units derived primarily from the magnetic properties of electric currents
the former official monetary unit of the European Union, used to evaluate the exchange rates and reserves of members of the European Monetary System on a common basis and in trading Eurobonds. It was replaced by the euro