Definitions for "Dividing"
That divides; separating; marking divisions; graduating.
serving to divide or marking a division; "the divisional line between two states"
serving simply to separate or partition; "a dividing partition"
The process of splitting up plants, roots and all that have began to get bound together. This will make several plants from one plant, and usually should be done to mature perennials every 3 to 4 years.