Where does “macrosismique” come from?

macrosismique (French) comes from French macro-, from Latin macro-, from Ancient Greek μακρός, from Proto-Italic makros, from Proto-Indo-European mh₂ḱrós, from Proto-Indo-European meh₂ḱ- — to raise, increase; long.

macrosismique (French): macroseismic

Definitions

macroseismic

Ancestry of “macrosismique”, step by step

Step	Language	Word	Meaning
1	French	macro-	macro
2	Latin	macro-	large
3	Ancient Greek	μακρός	long; tall, deep; far, distant
4	Proto-Italic	makros	—
5	Proto-Indo-European	mh₂ḱrós	lean, meager
6	Proto-Indo-European	meh₂ḱ-	to raise, increase; long

Every word from Proto-Indo-European meh₂ḱ- →Every word from Proto-Indo-European mh₂ḱrós →Every word from Proto-Italic makros →