Dyn or DYN may refer to:
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''DYN'' (magazine)
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Dyne (dyn), a unit of force
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Dyn (company)
Dyn, Inc. () was an Internet performance management and web application security company, offering products to monitor, control, and optimize online infrastructure, and also domain registration services and email products. The company was a ...
(Dynamic Network Services, Inc., originally known as DynDNS), an Internet performance management company
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Dynorphin, a class of opioid peptides
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Nira Dyn, Israeli mathematician
{{disambiguation