Kitchen expansion is a term used to describe the process of enlarging a kitchen space. This can be done by adding additional cabinets, countertops, and appliances, or by knocking down walls to create a larger area. The crossword solution for this term is 'ette, ' which is a French suffix meaning 'SMALL.' It is often used to describe SMALL versions of larger items, such as kitchenettes, which are miniature kitchens.