also: びじん
noun
Refers to a very small physical fragment, such as a speck of dust or a crumb. Often used in expressions like 微塵切り (finely chopped) or 微塵に砕ける (shatter into bits).
ガラスが微塵に砕けた。
The glass shattered into tiny pieces.
玉ねぎを微塵切りにする。
Finely chop the onion.
noun, noun which may take the genitive case particle 'no'
not at all; not the slightest
Used with a negative verb, typically in the pattern 微塵も〜ない, to emphasize a complete lack of something. Stronger than 全然〜ない.
彼の言葉には微塵も疑いを持たなかった。
I didn't have the slightest doubt about his words.
反省の色が微塵も見られない。
There is not the slightest sign of remorse.