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Sulphuric vs Letheon - What's the difference?

sulphuric | letheon |

As an adjective sulphuric

is an alternative spelling of lang=en.

As a noun letheon is

sulphuric ether used as an anaesthetic agent.

sulphuric

English

Adjective

(-)
  • (chiefly, British)

    • letheon

    English

    Noun

    (-)
  • (medicine, archaic) sulphuric ether used as an anaesthetic agent.
    • (Webster 1913)