lac lake

Noun

uncountable

The colouring matter of lac dye when precipitated from its solutions by alum.

Japanese Meaning

アルム（明礬）によって溶液中から沈殿した際に生じる、ラッカー染料の着色成分

The conservator tested the lac lake to determine its lightfastness on the restored textile.

修復された織物の耐光性を調べるため、保存修復士はアルムで沈殿させたラック染料の色素を試験した。

Sense（1）

The colouring matter of lac dye when precipitated from its solutions by alum.