Early 17th century; earliest use found in William Camden (1551–1623), historian and herald. From post-classical Latin onomantia from ancient Greek ὄνομα name + μαντεία, with haplology.
Definition of onomantia in US English:
onomantia
nounˌɒnəˈmantɪə
rare
= onomancy.
Origin
Early 17th century; earliest use found in William Camden (1551–1623), historian and herald. From post-classical Latin onomantia from ancient Greek ὄνομα name + μαντεία, with haplology.