leucocytosis

Etymology tree
Proto-Indo-European *lewk-
Proto-Indo-European *-ós
Proto-Indo-European *lewkós
Proto-Hellenic *leukós
Ancient Greek λευκός (leukós)der.
English leuco-
Ancient Greek κῠ́τος (kŭ́tos)der.
Latin cytader.
English -cyte
English leucocyte
Proto-Indo-European *-tis
Ancient Greek -τις (-tis)
Ancient Greek -σῐς (-sĭs)
Ancient Greek -ωσις (-ōsis)bor.
New Latin -ōsislbor.
English -osis
English leucocytosis
From leucocyte + -osis.