Immunology. an antibody that partly combines with an antigen and interferes with cell-mediated immunity, thereby preventing an allergic reaction.
a capacitor used for stopping the passage of direct current from one circuit to another while allowing alternating current to pass.
a solid mass of wood, stone, etc., usually with one or more flat or approximately flat faces. a hollow masonry building unit of cement, terra cotta, etc.: a wall made of concrete blocks. one of a set of cube-shaped pieces of wood, plastic, or the like, used as a child’s toy in building. a mold […]