What is Space Dyeing?

"Space dyeing is a process of dyeing of yarn in which multiple colors are applied along the length of each strand of yarn which may or may not repeat after a fixed interval."

It is a technique used to give yarn a unique, multi-colored effect. While a typical skein (a length of thread or yarn, loosely coiled and knotted) has the same color throughout, a skein of space dyed yarn has two or more different colors that typically repeat themselves throughout the length of the yarn. Space dyed yarn is sometimes referred to as dip dyed yarn. In space dyeing, different colors are printed along the length of the yarn to give yarn a multicolor effect.
"Yarn dyed with at least two different colors on one skein is called space dyed."
When space dyed yarns are used to form fabric, patterns can emerge depending on the length and variation of each color block. Space dyed yarn is a term that defines the dyeing process in which multiple colors are applied along a length of yarn (usually a continuous filament strand) at intervals. This process is typically used when different colored yarns are used in the construction of fabrics (e.g. plaids, checks, iridescent fabrics).
Generally, to dye the yarn, you place loose skeins in a large enameled steel vat and pour the dye and mordant over the various loops, dipping as necessary to produce the varying colors.