sulfur

play
noun sul·fur \ˈsəl-fər\
variants: or chiefly British

sulphur

Definition of sulfur

  1. :  a nonmetallic element that occurs either free or combined especially in sulfides and sulfates, is a constituent of proteins, exists in several allotropic forms including yellow orthorhombic crystals, resembles oxygen chemically but is less active and more acidic, and is used especially in the chemical and paper industries, in rubber vulcanization, and in medicine for treating skin diseases — see element table

sulfury

or chiefly British

sulphury

play \-ē\ adjective

Is it sulfur or sulphur?

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.

Origin and Etymology of sulfur

Middle English sulphur brimstone, from Latin sulpur, sulphur, sulfur


First Known Use: 14th century


SULFUR Defined for English Language Learners

sulfur

play
noun sul·fur \ˈsəl-fər\

Definition of sulfur for English Language Learners

  • chemistry : a yellow chemical element that has a strong, unpleasant odor when it is burned and that is used in making paper, gunpowder, medicine, etc.


SULFUR Defined for Kids

sulfur

play
noun sul·fur \ˈsəl-fər\
variants: also

sulphur

\ˈsəl-fər\

Definition of sulfur for Students

  1. :  a yellow chemical element that is found widely in nature and is used in making chemicals and paper


Medical Dictionary

1

sulfur

noun sul·fur
variants: or chiefly British

sulphur

\ˈsəl-fər\play

Medical Definition of sulfur

  1. :  a nonmetallic element that occurs either free or combined especially in sulfides and sulfates, is a constituent of proteins, exists in several allotropic forms including yellow orthorhombic crystals, resembles oxygen chemically but is less active and more acidic, and is used especially in the chemical and paper industries, in rubber vulcanization, and in medicine for treating skin diseases—symbol S; see element table


2

sulfur

adjective sul·fur
variants: or chiefly British

sulphur

Medical Definition of sulfur

  1. :  of, relating to, or resembling sulfur :  containing or impregnated with sulfur



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