English
macroion
From macro- + ion.
Proto-Indo-European *meh₂ḱ- ‘to increase’
Proto-Indo-European *mh₂ḱrós ‘lean, meager’
Proto-Hellenic *makrós
Ancient Greek μακρός ‘long’
English macro-
Proto-Indo-European *h₁ey- ‘to go’
Proto-Indo-European *h₁éyti ‘to go, to be going’
Proto-Hellenic *éimi ‘to go’
Ancient Greek εἶμι ‘I go’
Ancient Greek ἰόν ‘going’
English ion
Today it means
noun A very large ion, especially a colloidal particle carrying an electric charge
Language periods are conventional ranges, not dates for this word.
Etymograph / macroion