onomasiology
Concise Oxford English Dictionary © 2008 Oxford University Press:
onomasiology /ˌɒnə(ʊ)meɪsɪˈɒlədʒi/
▶noun the branch of knowledge concerned with terminology, in particular contrasting terms for similar concepts, as in a thesaurus.
– derivatives
onomasiological adjective.
onomasiological adjective.
'onomasiology' also found in these Oxford entries:

