monocytopenia

Etymology tree
German Monozytbor.
English monocyte
Ancient Greek -ο- (-o-)der.
Latin -o-bor.
English -o-
Proto-Indo-European *(s)penh₁-der.
Ancient Greek πένομαι (pénomai)
Proto-Indo-European *-os
Proto-Indo-European *-ēs
Ancient Greek -ης (-ēs)
Ancient Greek πένης (pénēs)
Proto-Indo-European *-h₂
Proto-Indo-European *-éh₂
Proto-Indo-European *-i-eh₂
Proto-Hellenic *-íā
Ancient Greek -ίᾱ (-íā)
Ancient Greek πενῐ́ᾱ (penĭ́ā)bor.
English -penia
English monocytopenia
From monocyte + -o- + -penia.