Useful english dictionary. 2012.
Ball-flower — Ball flow er, n. (Arch.) An ornament resembling a ball placed in a circular flower, the petals of which form a cup round it, usually inserted in a hollow molding. [1913 Webster] … The Collaborative International Dictionary of English
Flow (psychology) — Flow is the mental state of operation in which the person is fully immersed in what he or she is doing by a feeling of energized focus, full involvement, and success in the process of the activity. Proposed by positive psychologist Mihály… … Wikipedia
ball valve — ball′ valve n. mac a plumbing valve that regulates the flow of a fluid by means of a ball that moves into or out of the valve opening • Etymology: 1830–40 … From formal English to slang
Ball valve — A ball valve (like the butterfly valve and plug valve are one of the family of valves called quarter turn valves ) is a valve that opens by turning a handle attached to a ball inside the valve. The ball has a hole, or port, through the middle so… … Wikipedia
Flow control valve — Globe control valve with the pneumatic actuator and smart positioner A flow control valve regulates the flow or pressure of a fluid. Control valves normally respond to signals generated by independent devices such as flow meters or temperature… … Wikipedia
ball valve — noun any valve that checks flow by the seating of a ball • Hypernyms: ↑valve * * * noun 1. : a valve in which a ball fits into a spherical seat and regulates the aperture by its rise and fall due to fluid pressure, to a spring, or to its own… … Useful english dictionary
Flow separation — All solid objects travelling through a fluid (or alternatively a stationary object exposed to a moving fluid) acquire a boundary layer of fluid around them where viscous forces occur in the layer of fluid close to the solid surface. Boundary… … Wikipedia
Ball grid array — For other uses, see BGA (disambiguation). Intel Embedded Pentium MMX (bottom view) A ball grid array (BGA) is a type of surface mount packaging used for integrated circuits. Contents … Wikipedia
ball valve — Mach. 1. a valve controlling flow by means of a ball pierced with an opening in one direction and fixed to rotate on a spindle at right angles to the opening. 2. any valve that checks flow by the seating of a ball. [1830 40] * * * … Universalium
Ball valve — Valve Valve, n. [L. valva the leaf, fold, or valve of a door: cf. F. valve.] [1913 Webster] 1. A door; especially, one of a pair of folding doors, or one of the leaves of such a door. [1913 Webster] Swift through the valves the visionary fair… … The Collaborative International Dictionary of English
