What does "alembication" mean?

The act of making something more refined or pure; distillation.

Alembication

noun

noun ·Rare ·Advanced level

Noun

1
The act of making something more refined or pure; distillation. countable, literary, rare, uncountable
2
Excessively refined or pretentious language. countable, literary, rare, uncountable

Borrowed from Latin alembicatio, from Latin alembīcum.