nonconductors is a form of:

Quintessence



noun
1.
ឃ្វីនថេសឹនស៍
2.
(បច្ចេកទេស) ខ្លឹមសារ, ផ្នែកសំខាន់
3.
(The perfect embodiment of a thing) ខ្លឹមសារ, ភាពប្រសើរបំផុត, អគ្គសារ
ENGLISH MEANING
noun
1.
The fifth or last and highest essence or power in a natural body.
2.
Hence: An extract from anything, containing its rarest virtue, or most subtle and essential constituent in a small quantity; pure or concentrated essence.
verb
1.
(TRANSITIVE) To distil or extract as a quintessence; to reduce to a quintessence.