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Webster 1913 Edition

Noun.

Of the nature of wormwood.

“Absinthian bitterness.”

T. Randolph.

Adj.

[from absinthium.] Of the nature of wormwood.

absinthian ‎(comparative more absinthian, superlative most absinthian)

Of the nature of wormwood.
- 1652, Thomas Randolph, Poems:
  Tempering absinthian bitterness with sweets