The green alcoholic drink absinthe, comes from the Greek apsinthion (sometimes it is simply called absinthion) for wormwood because it includes the flowers and leaves of the herb Artemisia absinthium, "grande wormwood". So the inventor stole the Greek for the plant for his drink, rather than come up with something new. The plant is also used therapeutically to remedy indigestion, gastric pain and labour pain. The name comes from Artemis, goddess of the hunt, and protector of the forest and the absinthium bit means, possibly, unenjoyable, alluding to the bitterness.
So the inventor was hijacking the use of the plant as remedial and also warning drinkers of its bitterness!

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