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TAKE THE QUIZsulfurous
adjective
sul·fu·rous
ˈsəl-fə-rəs
-fyə-,
also (especially for sense 1a) ˌsəl-ˈfyu̇r-əs
variants
or chiefly British sulphurous
sulfurously
adverb
sulfurousness
noun
The spelling sulfur predominates in U.
S.
technical usage, while both sulfur and sulphur are common in general usage.
British usage tends to favor sulphur for all applications.
The same pattern is seen in most of the words derived from sulfur.
Last Updated: 17 Jul 2022
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Merriam-Webster unabridged
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