infinitesimal calculus is a noun meaning "the branch of mathematics that is concerned with limits and with the differentiation and integration of functions". It carries one recorded sense.
the branch of mathematics that is concerned with limits and with the differentiation and integration of functions
mathematics
Definitions, synonyms and semantic relations for infinitesimal calculus come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.