sulfur

play
noun sul·fur \ˈsəl-fər\

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

sulphury

play \-ē\ adjective

Usage Discussion of sulfur

The spelling sulfur predominates in United States 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.

Variants of sulfur

less commonly

sulphur

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\

Definition of sulfur for Students

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

Variants of sulfur

also

sulphur

\ˈsəl-fər\

Medical Dictionary

1

sulfur

noun sul·fur

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

Variants of sulfur

or chiefly British

sulphur

\ˈsəl-fər\play

2

sulfur

adjective sul·fur

Medical Definition of sulfur

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

Variants of sulfur

or chiefly British

sulphur



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