Final answer:
The incorrect pair is '-edema' with pain, as edema refers to fluid accumulation in tissues not pain. Other pairs are correctly matched.
Step-by-step explanation:
Among the pairs of elements and their meanings listed, the one that is incorrectly paired is -edema with pain. Edema is actually associated with fluid accumulation in tissue, often related to circulatory deficits, and not necessarily with pain. The rest of the options are correctly matched: -ectasis indeed refers to dilation or expansion, -tripsy to crushing (often used in the context of breaking down stones, as in lithotripsy), -osis to an abnormal condition, and -plasia to formation or growth of tissues or cells.