infinitesimal
in-fin-ih-TES-ih-muladjMeaning too small to measure
Memory hook INFINITE-simal: INFINITELY small. Sami peers into the microscope at creatures so small that no ruler could ever measure them. They are infinitesimal.
Under the microscope, Sami found infinitesimal creatures swimming in a drop of pond water.
In context The difference between the two scales was infinitesimal, less than the weight of a grain of sand, so the baker trusted either one.
Similar tiny, microscopic, teeny, imperceptible
Opposite huge, immense, vast
From Modern Latin infinitesimus, “the infinitieth (part),” from infinitus (endless).