olemus
(a) pulbriks muutma
(b) ülekantud tähenduses: põrmustama

Wiktionary:
1. (transitive) to render into dust or powder
2. (transitive) to completely destroy, especially by crushing to fragments or a powder
3. (transitive) to defeat soundly, thrash

näiteid
ISO/IEC 27040:
pulbriks või tolmuks jahvatades hävitama
= destruct by grinding media to a powder or dust