Where does “infinitesimally” come from?

Infinitesimally comes from Middle English -ly added to Latin infinitus, from Latin in- and infinitus meaning "not bounded," derived from Proto-Indo-European ne and dʰeygʷ-.

infinitesimally (English): In an infinitesimal manner; To an infinitesimal...

Definitions

  1. In an infinitesimal manner; To an infinitesimal...

Ancestry of “infinitesimally”, step by step

StepLanguageWordMeaning
1EnglishinfinitesimalIncalculably, exceedingly, or immeasurably...
2Latininfinitesimusinfinitesimal
3Latinīnfīnītusboundless, unlimited, endless
4Latinīn-un-, non-, not
5Latinînin, at, on, upon, from (space)
6Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
7Proto-Italicenin
8Proto-Indo-Europeanh₁énin
Every word from Proto-Indo-European h₁énEvery word from Latin īn-Every word from Proto-Italic en