IPA: /ˌælˈkɛmɪkəl/
KK: /ælˈkɛmɪkəl/
Relating to a historical practice that aimed to transform ordinary materials into something special, often involving mystical or magical elements.
The alchemical process was believed to transform base metals into gold.
Alchemical → It is formed from "al-" (an Arabic definite article meaning 'the') and "khemia" (from Greek "khēmeia", meaning the art of transmuting metals). The word refers to the ancient practice of transforming base metals into gold or finding the elixir of life, thus embodying the essence of this mystical art.
Think of 'the' ('al-') art of transforming metals ('khemia') — that's why alchemical refers to the mystical practice of transformation.