Incognitum

noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    An American mammoth or mastodon, especially when presumed extant. archaic

    "When, as president, he dispatched Meriwether Lewis and William Clark to the Northwest, Jefferson hoped that they would come upon live incognita roaming its forests."

Synonyms

All synonyms
mastodon

Example

More examples

"When, as president, he dispatched Meriwether Lewis and William Clark to the Northwest, Jefferson hoped that they would come upon live incognita roaming its forests."

Etymology

Borrowed from Latin incognitum (“unknown”). Coined by William Hunter.

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Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.