lexicostatistical

Etymology tree
Proto-Indo-European *leǵ-der.
Proto-Indo-European *léǵ-e-ti
Proto-Hellenic *légō
Ancient Greek λέγω (légō)
Proto-Indo-European *-tis
Ancient Greek -τις (-tis)
Ancient Greek -σῐς (-sĭs)
Ancient Greek λέξῐς (léxĭs)
Proto-Indo-European *-kos
Ancient Greek -κός (-kós)
Ancient Greek -ῐκός (-ĭkós)
Ancient Greek λεξῐκός (lexĭkós)
English lexico-
English statistic
Proto-Indo-European *h₂el-der.?
Proto-Italic *-ālis
Latin -ālisbor.
Old French -albor.
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Latin -ālis
Old French -elbor.
▲
Latin -ālisbor.
Middle English -al
English -al
English statistical
English lexicostatistical
From lexico- + statistical.