Where does “rintamalinja” come from?

rintamalinja (Finnish) comes from Finnish linja, from Old Swedish linia, from Latin līnea, from Latin līnum, from Proto-Italic līnom, from Proto-Indo-European līnom — flax.

rintamalinja (Finnish): battlefront region or line along which opposing armies engage in combat

Definitions

battlefront region or line along which opposing armies engage in combat

Ancestry of “rintamalinja”, step by step

rintamalinja traces back through two separate lines of ancestry.

via Finnish linja

Step	Language	Word	Meaning
1	Finnish	linja	line; policy, line; curriculum, study program
2	Old Swedish	linia	—
3	Latin	līnea	A linen thread
4	Latin	līnum	flax
5	Proto-Italic	līnom	—
6	Proto-Indo-European	līnom	flax

via Finnish rintama

Step	Language	Word	Meaning
1	Finnish	rintama	front, battlefront; front; theater
2	Finnish	rinta	breast; chest, especially the front side of it
3	Finnish	-mä	Front vowel variant of -ma

Every word from Proto-Indo-European līnom →Every word from Proto-Italic līnom →Every word from Latin līnum →