kellertyminen
Kellertyminen is a Finnish term referring to the phenomenon of yellowing or becoming yellow in color. This can apply to various materials and contexts. In the natural world, it can describe the change in leaf color during autumn before they fall, a process known as senescence. This yellowing is often due to the breakdown of chlorophyll, revealing underlying carotenoid pigments.
In textiles and plastics, kellertyminen can indicate degradation. For instance, certain plastics may yellow over time
In a broader sense, kellertyminen can also be used metaphorically. It might describe a decline in vibrancy