1.
tiny particle; fine fragment
An extremely small piece or particle. Often used in cooking to describe finely chopped ingredients (みじん切り).
2.
the slightest bit; not at all (in negative expressions)
Used with negative expressions to emphasize the complete absence of something — not even the tiniest amount.
Usage
Two main uses: (1) In cooking, 微塵切り means finely minced or diced. (2) In the pattern 微塵も〜ない, it emphasizes the complete absence of something. Both uses are very common.
Common collocations
Related Words
Compare:
寸分 (a tiny bit)