ballistocardiogram

Etymology tree
Proto-Indo-European *gʷelH-der.
Proto-Hellenic *gʷəlnō
Ancient Greek βᾰ́λλω (bắllō)
Ancient Greek βαλλίστρᾱ (ballístrā)der.
Latin ballista
Proto-Indo-European *-ikos
Proto-Italic *-ikos
Latin -icuslbor.
Old French -iquebor.
Middle English -ik
English -ic
English ballistic
Ancient Greek -ο- (-o-)der.
Latin -o-bor.
English -o-
English ballisto-
Proto-Indo-European *ḱerd-
Proto-Indo-European *ḱḗr
Proto-Indo-European *ḱr̥díyeh₂
Proto-Hellenic *kərdíyā
Ancient Greek καρδία (kardía)lbor.
English cardio-
Proto-Indo-European *gerbʰ-
Proto-Hellenic *grə́pʰō
Ancient Greek γρᾰ́φω (grắphō)
Proto-Indo-European *-mn̥
Ancient Greek -μᾰ (-mă)
Ancient Greek γράμμα (grámma)lbor.
English -gram
English cardiogram
English ballistocardiogram
From ballisto- + cardiogram.