アトメートルMeanings1nounattometer; attometreSI unit of length equal to 10⁻¹⁸ meters; used in scientific contexts such as particle physics.アトメートルは、原げん子し核かくの大おおきさよりもはるかに小ちいさい単たん位いです。An attometer is a unit far smaller than the size of an atomic nucleus.
