This is the 9473rd most frequent Russian word.
уйттендэль
This word does not appear to be standard Russian. It might be a misspelling or a word from another context.
This usage of 'уйттендэль' refers to a thematic focus or specialization.
Уйте́ндэль стал основным направлением его деятельности.
Uyttendel has become the main focus of his activity.
Here 'уйттендэль' refers to elements or motifs, likely derived figuratively.
На его картине изобразились яркие уйте́ндэли природы.
Bright uyttendels of nature were depicted on his painting.
In this context, 'уйттендэль' suggests exploring aspects or roots of heritage.