thrombocytopenic

Etymology tree
Ancient Greek θρόμβος (thrómbos)der.
New Latinder.
English thrombo-
Ancient Greek κύτος (kútos)lbor.
English cyto-
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 cytopenia
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -icuslbor.
Old French -iquebor.
Middle English -ik
English -ic
English cytopenic
▲
English thrombo-
Ancient Greek κῠ́τος (kŭ́tos)der.
Latin cytader.
English -cyte
English thrombocyte
Ancient Greek -ο- (-o-)der.
Latin -o-bor.
English -o-
▲
English -penia
English thrombocytopenia
▲
English -ic
English thrombocytopenic
From thrombo- + cytopenic, or from thrombocytopenia + -ic.