Lemniscate

//lɛmˈnɪs.kət// noun

noun ·Rare ·Advanced level

Definitions

Noun
  1. 1
    A closed curve having the shape of a figure eight or an infinity symbol (∞).
  2. 2
    any of several plane algebraic curves in the shape of a figure eight wordnet
  3. 3
    The lemniscate of Bernoulli
  4. 4
    Any of a variety of quartic functions producing similar figure-of-eight closed curves.

Synonyms

All synonyms
infinityinfinityinfinity symbol

Etymology

First attested in 1781; borrowed from New Latin lēmniscāta (figūra), substantivized from lēmniscātus (“decorated with ribbons”), from lēmniscus (“a sort of ribbon”).

Related phrases

lemniscate caselemniscate constantlemniscate functionlemniscate inverse curvelemniscate of Bernoullilemniscate of Boothlemniscate of Geronolemniscate of Huygensfigure of eightinfinity symbollemniscate of bernoulliquartic function

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