Principal Quantum Number

Science / Chemistry / Principal Quantum Number: The quantum number that determines the size and (in hydrogen atoms) the energy of an orbital. N is used to label electron shells. N may take on integer values from 1 to infinity.

Other Words for Number

Number Adjective Synonyms: numeral, integer, figure, digit
Number Verb Synonyms: few, handful, crowd, slew, gang, bunch, party, bevy, covey, troop, company, platoon, swarm, horde, multitude, mob, host, army, mass, hundred, thousand, million, billion, several, many, numbers, legions, slew(s) or slue(s), loads
Number Noun Synonyms: issue, edition, copy
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Other Words for Principal

Principal Adjective Synonyms: chief, primary, prime, paramount, main, first, foremost, ranking, pre-eminent, predominant, dominant, prevailing, leading, starring
Principal Noun Synonyms: (working) capital, capital funds, resources, investment, backing, (cash) reserve(s), assets, money
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Angular Momentum Quantum Number

Science / Chemistry / Angular Momentum Quantum Number: (ell) azimuthal quantum number; orbital angular momentum quantum number. A quantum number that labels the subshells of an atom. Sometimes called the orbital angular momentum quantum number, this quant MORE

Principal On A Note

Business / Accounting / Principal On A Note: The face amount of a note: the amount (excluding interest) that the maker agrees to pay the payee. MORE

Principal Meridian

Business / Real Estate / Principal Meridian: The main imaginary line running north and south and crossing a base line at a definite point, used by surveyors for reference in location and describing land under the rectangular (government) survey MORE

Principal Exchange-Rated-Linked Securities (PERLS)

Business / Finance / Principal Exchange-Rated-Linked Securities (PERLS): A debt instrument with its principal and interest denominated in U.S. dollars, but with principal repayment depending on the exchange rate of the U.S. dollar against a foreign currency. MORE

Principal Planes

Entertainment / Photography / Principal Planes: Imaginary lines which pass through the nodal planes of a lens system. MORE

Principal Point

Entertainment / Photography / Principal Point: Point from which the focal length is measured. The principal point of a simple lens is located at the center of the lens. Compound lenses have two principal points, the location of which cannot be det MORE

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