11-Letter Words Containing: I,C,H,R,O,I,S,M

• small sheet of microfilm on which many pages of material have been photographed; a magnification system is used to read the material

• An electrical switch that operates with very little travel of (or pressure on) the actuator.

• Any of the non-biting midges or Chironomidae, a family of true flies within the order Diptera.

• the property of occuring regularly at equal time intervals, of maintaining a constant period or interval, despite variations in other measurable factors in the same system.

• the branch of electronics dealing with thermionic phenomena (especially thermionic vacuum tubes)

• a theory that social and cultural events are determined by history