onomasticon

[ on-uh-mas-ti-kon, -kuhn ]
/ ˌɒn əˈmæs tɪˌkɒn, -kən /

noun

a list or collection of proper names.
a list or collection of specialized terms, as those used in a particular field or subject area.

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Origin of onomasticon

1700–10; <Greek onomastikòn (bíblion) vocabulary arranged by subjects; see onomastic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

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