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null (nul) 1. insignificant; having no consequence or value. 2. absent or nonexistent. 3. zero; nothing. null an absence of information, as contrasted with zero or blank or nil, about a value. null cell called also null lymphocyte; see null cell. null hypothesis a statistical hypothesis which states that one variable has no association with another variable, or set of variables. That is, the observed results can be explained by chance alone. null lymphocyte see null cell. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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