sulphurous

comparative more sulphurous · superlative most sulphurous

1. UKalternativeAlternative spelling of sulfurous.

   "The Northern Heights at last," you say to yourself, hastily closing the carriage window because the Yorkshire coal used by the Eastern Region and its predecessors makes their tunnels more sulphurous than any we know.

   1951 October, R. S. McNaught, “Lines of Approach”, in Railway Magazine, page 704

   1 more example

   It is only when actually gazing on an active volcano that one can fully realize its awfulness and grandeur. Whence comes that inexhaustible fire whose dense and sulphurous smoke forever issues from this bare and desolate peak?

   1869, Alfred Russel Wallace, The Malay Archipelago, volume I, London: Macmillan and Co., page 450