microcosmic salt
A white salt, extracted from urineA white salt, extracted from urine; once used in the preparation of phosphorus, and used in analytical tests for some metals; ammonium sodium hydrogenphosphate (NH₄)NaHPO₄.
Meaning
1 senses(dated, uncountable)A white salt, extracted from urine; once used in the preparation of phosphorus, and used in analytical tests for some metals; ammonium sodium hydrogenphosphate (NH₄)NaHPO₄.
a white salt present in urine and used to test for metal oxides
Origin
From its alchemical name sal microcosmicum.From its alchemical name sal microcosmicum.
Wiktionary, CC BY-SA 4.0 · source
Lessons for this word
1 lessons- A1Countable and uncountable nouns — Because it can be uncountable