hapax legomenon

noun ha·pax le·go·me·non \ˌha-ˌpaks-li-ˈgä-mə-ˌnän, ˌhä-ˌpäks-, -nən\

plural hapax le·go·me·na \-nə\

Definition of HAPAX LEGOMENON

: a word or form occurring only once in a document or corpus

Greek, something said only once

First Known Use: 1882

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