The crossword solutions for the term PRESSURE; FILTER are STRAIN. Pressure is a force applied uniformly over a surface, and it can be measured in units such as pounds per square inch or pascals. Filtering is a process of separating particles from a fluid, such as air or water, by passing it through a porous material. STRAIN is the deformation of an object due to an applied force, which can be calculated by dividing the change in length by the original length of the object.