Definition of idiocy in English:

idiocy

Line breaks: idi¦ocy
Pronunciation: /ˈɪdɪəsi
 
/

noun (plural idiocies)

[mass noun]

Origin

early 16th century (originally denoting low intelligence): from idiot, probably on the pattern of pairs such as lunatic, lunacy.

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Pronunciation: ˌastrə(ʊ)ˈgeɪʃ(ə)n
noun
(in science fiction) navigation in outer space