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Void may refer to: ==In science and engineering== * Void (astronomy), the empty spaces between galaxy filaments * Void (composites), a pore that remains unoccupied in a composite material * Lack of matter, or vacuum * Void, in boiling heat transfer, formed where there is a departure from nucleate boiling, causing a critical heat flux * Void, in mechanical engineering, is a bubble or pocket of vapor which forms near a propeller or pump, causing cavitation * Void, in casting or injection molding, describes a defect where there are empty spaces (air pockets) in a completed part * Void coefficient, in nuclear engineering, is a measure of how spaces devoid of either moderator or coolant affect the reactivity of a nuclear reactor * Void ratio, of voids to solids in a mixture, in material sciences * Void safety, an issue raised in programming by a reference that is not attached to an object, also known as null reference * Void type, keyword indicating the absence of type information in many programming languages * VoID (Vocabulary of Interlinked Dataset), the vocabulary to describe linked open datasets in order for users to discover, interlink and evaluate the quality of these datasets on the Web 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Void」の詳細全文を読む スポンサード リンク
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