Scrabble?! MICROSPHERES

Definitions of MICROSPHERES in various dictionaries:

Microparticles are particles between 0.1 and 100 {\displaystyle \mu } m in size. Commercially available microparticles are available in a wide variety of materials, including ceramics, glass, polymers, and metals. Microparticles encountered in daily life include pollen, sand, dust, flour, and powdered sugar. Microparticles have a much larger surface-to-volume ratio than at the macroscale, and thus their behavior can be quite different. For example, metal microparticles can be explosive in air. Microspheres are spherical microparticles, and are used where consistent and predictable particle surface area is important. In biological systems, microparticles are known as microvesicles small membrane-bound vesicles circulating in the blood derived from cells that are in contact with the bloodstream such as platelets and endothelial cells. Because they retain the signature membrane protein composition of the parent cell, microparticles carry useful