n. [ Gr. &unr_; measure + -graph. ] An instrument attached to a locomotive for recording its speed and the number and duration of its stops. [ 1913 Webster ]

n. [ See Micrography. ] 1. An instrument for executing minute writing or engraving. [ 1913 Webster ]

2. a graphic image, such as a photograph or drawing, representing an object as seen with a microscope, usually much enlarged as compared with the original object. A photograph of a microscopic image is also called a photomicrograph or microphotograph. [ PJC ]

a. Of or pertaining to micrography. [ 1913 Webster ]

n. [ Micro- + -graphy: cf. F. micrographie. ] 1. The description of microscopic objects. [ 1913 Webster ]

2. Examination or study by means of the microscope, as of an etched surface of metal to determine its structure. [ Webster 1913 Suppl. ]