Spacing for type in which characters are not all the same width (i.e. an i would take less space than an m).
a method of spacing whereby each character is spaced to accommodate the varying widths of letters or figures, so increasing readability. Books and magazines are set proportionally spaced, typewritten documents are generally mono spaced.
The characteristic of a type face wherein each letter has its own width value. Most typewriters and line printers use only mono-spaced fonts.
Printing in which each letter or symbol occupies an amount of horizontal space that depends upon its design.
each letter is printed in a unique amount of space, depending on how thick it is. So an "I" and an "M" take up different amounts of space. All typeset material and some computer printers do proportional spacing, while typewriters and dot matrix printers offer monospacing or fixed spacing.
Characters are allocated horizontal spacing in proportion to their size, thus an 'm' would have more space than an 'i'. Most fonts are of this type. (See also non-proportional spacing.)