nomen actionis
/ˌnəʊmɛn aktɪˈəʊnɪs/ /ˌnəʊmən aktɪˈəʊnɪs/Grammar
noun
A noun of action; a word or phrase that functions as a noun of action.
Origin
Mid 19th century; earliest use found in The New Englander. From classical Latin nōmen name + actiōnis, genitive singular of actiō, probably after post-classical Latin nomen agentis nomen agentis.