Definitions for variegation
variability in coloration
the act of introducing variety (especially in investments or in the variety of goods and services offered)
"my broker recommended a greater diversification of my investments"; "he limited his losses by diversification of his product line"
the state of being variegated
a variation in the colour of different zones of the same plant
the act of variegating or diversifying, or the state of being diversified, by different colors; diversity of colors
Variegation is the appearance of differently coloured zones in the leaves, and sometimes the stems, of plants. This may be due to a number of causes. Some variegation is attractive and ornamental and gardeners tend to preserve these. The term is also sometimes used to refer to colour zonation in flowers, minerals, and the skin, fur, feathers or scales of animals.