submicroscopic

Etymology tree
Proto-Indo-European *upó
Proto-Italic *supo
Latin sub
Latin sub-der.
English sub-
Proto-Indo-European *mey-der.?
Ancient Greek μῑκρός (mīkrós)
Proto-Indo-European *speḱ-
Proto-Indo-European *-yeti
Proto-Indo-European *spéḱyeti
Proto-Hellenic *sképťomai
Ancient Greek σκέπτομαι (sképtomai)
Proto-Indo-European *-ós
Proto-Hellenic *-ós
▲
Ancient Greek -ος (-os)influ.
Ancient Greek -ός (-ós)
Ancient Greek σκοπός (skopós)
Proto-Indo-European *-eti
Proto-Indo-European *-eyéti
Proto-Indo-European *-esyéti
Proto-Indo-European *-éh₁ti
Proto-Indo-European *-yeti
Proto-Indo-European *-éh₁yeti
Proto-Indo-European *-yeti
Proto-Indo-European *-éyeti
Ancient Greek -έω (-éō)
Ancient Greek σκοπέω (skopéō)
Proto-Indo-European *-yós
Proto-Italic *-ios
Old Latin -ios
Latin -ius
Latin -ium
Latin mīcroscopiumlbor.
Italian microscopiobor.
English microscope
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -icuslbor.
Old French -iquebor.
Middle English -ik
English -ic
English microscopic
English submicroscopic
From sub- + microscopic.