Subscript

usgb/ˈsʌbskrɪpt/
noun

A subscript is a number, letter, or symbol that is written slightly below and to the right of a letter or number.

In mathematics, we use subscript to distinguish different variables, such as x1, x2, etc.
Visual representation of "subscript" - A subscript is a number, letter, or symbol that is written slightly below and to the right of a letter or number

Often appears as...

  • subscript notation
  • subscript variable

Usage tips

Technical

Definition 1 of 2
Visual representation of "subscript"
LampPro Tip 1/3

Differentiate Elements

Subscripts help distinguish between similar elements or variables in equations.

Illustration for Differentiate Elements
The oxygen molecule O2 has two oxygen atoms, represented by the subscript '2'.
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Sequential References

In sequences or lists, subscripts are used to reference elements in order.

Illustration for Sequential References
For a series a1, a2, a3..., the subscript indicates the position in the sequence.
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Chemical Formulas

Chemistry uses subscripts to show the number of atoms in a molecule.

Illustration for Chemical Formulas
Water (H2O) has two hydrogen atoms, shown by the subscript '2'.
Visual representation of the word "Subscript"

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