What does the suffix sis mean? The suffix sis is used to form nouns of action from verbs such as the process, state, or condition. Examples include thesis and aphesis. The suffix is Greek in origin.
1. fat cell-cells composed of fat. adipose cell. somatic cell, vegetative cell-any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes; somatic cells are produced from preexisting cells;. fat cell-cells composed of fat. adipose cell. somatic cell, vegetative cell-any of the cells of a plant or animal except the reproductive cells; a cell that does not participate in the production of gametes; somatic cells are produced from preexisting cells;
Medical Definition of Fat cell. Fat cell: A cell containing fat. Also called an adipocyte. A fat cell, or adipocyte, is a connective tissue cell that has differentiated and become specialized in the synthesis (manufacture) and storage of fat.