Jäänmileväinen
Jäänmileväinen is a Finnish term that describes a condition related to the presence of ice or frost on or within a material, particularly in a context that suggests it has been frozen for some time. The word is a compound of "jää" (ice) and "mileväinen" (which relates to something being thoroughly permeated or saturated, often with a negative connotation suggesting staleness or decay, but in this context, simply implying a deep freezing).
The term is not commonly used in everyday language but might appear in specialized fields or technical
The connotation of "mileväinen" suggests that the freezing is not superficial but has penetrated deeply into