19-letter words containing e, q, u, i
- sequential scanning — a system of scanning a television picture along the lines in numerical sequence
- spin quantum number — the quantum number that designates the total angular momentum associated with electron spin and has a value of ½ in units of h /2π.
- squamous epithelium — epithelium consisting of one or more layers of scalelike cells.
- squirrel-tail grass — any of various grasses having long fruiting stalks.
- superhigh frequency — any frequency between 3000 and 30,000 megahertz. Abbreviation: SHF.
- system requirements — specifications needed to run a program
- theory of equations — the branch of mathematics dealing with methods of finding the solutions to algebraic equations.
- thermal equilibrium — the relationship between two systems connected only by a diathermic wall.
- to pop the question — If you pop the question, you ask someone to marry you.
- triangle inequality — the theorem that the absolute value of the sum of two quantities is less than or equal to the sum of the absolute values of the quantities.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- very high frequency — any frequency between 30 and 300 megahertz. Abbreviation: VHF.