The act of grouping or uniting; chemic union. C.-back, in the microscope, the lens-system of an objective farthest from the object, composed of a plano-concave of flint glass and a bi-concave of crown glass, or a bi-concave and two bi-convex glasses. C.-front, in the microscope, the lens-system nearest the objective.

Link to This Definition
Did you find this definition of COMBINATION helpful? You can share it by copying the code below and adding it to your blog or web page.
Definition of  COMBINATION