Correct spelling for the English word "RADAN" is [ɹˈe͡ɪdən], [ɹˈeɪdən], [ɹ_ˈeɪ_d_ə_n] (IPA phonetic alphabet).
There is no widely recognized or established dictionary definition for the term "RADAN." It does not appear to have a commonly accepted meaning in the English language.
However, it is worth noting that "Radan" is a name of Czech origin. In Czech, "Radan" is commonly used as a masculine given name. It is derived from the Slavic elements "rad," meaning "happy" or "willing," and "dan," meaning "gift." As a personal name, it is used to refer to individuals and does not have a specific dictionary definition.
Additionally, "Radan" can also refer to "Radan Computer," which is a company specializing in the development of computer-aided design (CAD) and manufacturing software. This company provides software solutions for various industries such as automotive, aerospace, and sheet metal fabrication. However, it should be noted that "Radan" in this context is a trademarked name rather than a dictionary-defined term.
In general, without additional context or information, the term "Radan" does not have a specific dictionary definition and could refer to various specific uses or meanings.