corpuscle

grain - a relatively small granular particle of a substance; "a grain of sand"; "a grain of sugar"

grinding - material resulting from the process of grinding; "vegetable grindings clogged the drain"

material, stuff - the tangible substance that goes into the makeup of a physical object; "coal is a hard black material"; "wheat is the stuff they use to make bread"

chylomicron - a microscopic particle of triglycerides produced in the intestines during digestion; in the bloodstream they release their fatty acids into the blood

flyspeck - a tiny dark speck made by the excrement of a fly

identification particle - a tiny particle of material that can be added to a product to indicate the source of manufacture

blood - the fluid (red in vertebrates) that is pumped through the body by the heart and contains plasma, blood cells, and platelets; "blood carries oxygen and nutrients to the tissues and carries away waste products"; "the ancients believed that blood was the seat of the emotions"

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";

leucocyte, leukocyte, WBC, white blood cell, white blood corpuscle, white cell, white corpuscle - blood cells that engulf and digest bacteria and fungi; an important part of the body's defense system

packed cells - a preparation of blood cells separated from the liquid plasma; "packed cells are given to severely anemic patients in order to avoid overloading the circulatory system with too much fluid"

erythrocyte, RBC, red blood cell - a mature blood cell that contains hemoglobin to carry oxygen to the bodily tissues; a biconcave disc that has no nucleus