syntetttistä
Syntetttistä appears to be a non-standard or erroneous form in Finnish and is not recognized as a separate, established term. In most Finnish texts, the intended word is likely synteettistä, which is the partitive singular form of the adjective synteettinen, meaning synthetic or man-made.
The standard term synteettinen is used to describe substances, materials, or processes produced by chemical synthesis
Etymology and linguistic note: synteettinen is a Finnish loanword built on the concept of synthesis. It is
Usage considerations: If you encounter syntetttistä in published Finnish, it is most likely a misspelling of