alchemist:
(plural: ‘alchemists‘; pronunciation: the letters ‘ch’ are said with a ‘k’ sound as in “king”)
an alchemist at work
a person in the middle ages who studied or practised the science, called ‘alchemy’, related to finding a substance, called ‘elixir’ or ‘philosopher’s stone’, that was supposed to turn all base metals into gold and a medicine to cure all diseases, ;
a person, usually a scientist, who spends all his time and efforts to find something that is not there or that is impossible to find; an intellectual,

an alchemist of ancient Iran
It is found out that alchemy was practiced by alchemists in ancient Egypt, India, Mesopotamia, Persia, China, Japan, and then medieval Europe for about 2, 500 years, and the practice later developed into chemistry and the alchemists into chemists and scientists!
There are some alchemists these days who spend their entire lives, sacrificing their families, personal comforts and money to find or invent a ‘time machine’ that is supposed to take people to any period of time in the past or future!
