noun, na-adjective
minuteness; slightness; tiny
Used as a noun or adjectival noun to describe something extremely small, subtle, or insignificant. Often appears in compounds or formal contexts.
その違いは微で、ほとんど気にならない。
The difference is minute and hardly noticeable.
numeric
one millionth; 10^-6
Numeric prefix meaning one millionth, used in scientific and technical contexts.
1マイクロメートルは1メートルの微、つまり100万分の1です。
One micrometer is one millionth of a meter, that is, 10^-6.