Regelnmatige
Regelnmatige is not a widely recognized term in major reference works. It appears to be either a misspelling or a coined or context-specific label rather than a standard concept with an established definition.
The most plausible explanation is that the word derives from the Dutch adjective regelmatige, meaning “regular”
If you encounter the term in a text, it is likely a typographical error, a misreading, or
See also: Dutch language, German language, regular (linguistics and mathematics), regularity.