onomasiˈologistn. an expert in or student of onomasiology.
ΘΚΠ
the mind > language > naming > study of names and naming > [noun] > one who
onomatologist1695
onomasiologist1974
onomastician1975
1974 Lang. Sci. Aug. 28/3 Eventually the onomasiologist may be able to decide whether what we call conceptual structure is something strange of a shape we can scarcely probe by introspection.