trädgräns (Swedish) comes from Swedish träd, from Old Norse þráðr, from Proto-Germanic þrēduz, from Proto-Indo-European treh₁-tu-, from Proto-Indo-European terh₁- — to rub, turn; to drill, pierce.
trädgräns (Swedish): tree line
Definitions
tree line
Ancestry of “trädgräns”, step by step
trädgräns traces back through two separate lines of ancestry.