The story
- Proto-Indo-European*meh₂ḱ-
- Proto-Indo-European*mh₂ḱrós
- Proto-Hellenic*makrós
- Ancient Greekμᾰκρός (măkrós)
- Frenchmacro-
- Englishmacro-
- Proto-Indo-European*h₁én
- Proto-Italic*en
- Proto-Italic*en-
- Latinin-
- Proto-Indo-European*ster-
- Proto-Indo-European*sterh₃-
- Proto-Indo-European*strew-
- Proto-Indo-European*stréweti
- Proto-Italic*strowō
- Latinstruō
- Latinīnstruō
- Latinīnstrūctiō
- Old Frenchinstruccion
- Middle Englishinstruccioun
- Englishinstruction
- English todaymacroinstruction
From macro- + instruction, due to their being often quite long.
Etymology from Wiktionary, CC BY-SA 4.0.