1890 Microcharacter, any zoological character derived from microscopic or other minute examination.
1974 1 Feb. 321/1 A comprehensive introductory account of macrocharacters of soils as they occur naturally and of the microcharacters of the soil solid, liquid, gaseous and living phases.
1995 33 47 The most valuable diagnostic characters include the distribution pattern of stomata, and microcharacters, such as the size of mamillae.