algebraic geometry, a lemniscate is any of several figure-eight or ∞-shaped curves. The word comes from the Latin "lēmniscātus" meaning "decorated with ribbons", from the Greek λημνίσκος meaning "ribbons", or which alternatively may refer to the wool from which the ribbons were made.
Leminscatus (noun) The infinity (∞) sign. Derived from the Latin 'lēmniscātus,' meaning "decorated with ribbons", and which itself ioriginates from the Greek 'λημνίσκος' (lēmnískos), meaning "ribbon."
The lemniscatus is a figure-eight curve that resembles a group of curves in algebraic geometry collectively called lemniscates. Jacob Bernoulli first used the term 'lemniscate' in the late 17th century, based on the same Latin and Greek roots. While a 'lemniscate' refers to any algebraically defined figure-eight curve, the lemniscatus specifically symbolises the concept of infinity.
Johann knew that his brother Jake was serious about studying philosophy at university when Jake came home one day sporting a new lemniscatus tattoo on his arm.