fluxions

verb

1. (form-of, indicative, present, singular, third-person)third-person singular simple present indicative of fluxion

noun

1. (form-of, plural)plural of fluxion
2. (obsolete)differential calculus.

   “The sheltered world of academia suited Clarence, who for the first time was among his intellectual peers. He excelled at geometry, algebra and fluxions.”