Milacre 



An area one-thousandth part of an acre, containing 

 43.56 square feet, often used as a plot 6.6 feet square. 



Millibar 



A unit of atmospheric pressure, 1000 millibars repre- 

 sents a pressure of about 29.53 inches (750.1 mm.) of mer- 

 cury. 



Millicurie 



One-thousandth part of a Curie (q. v.). 



Milligram 



One-thousandth part of a gram. 



Milliliter 



One-thousandth part of a liter. 



Millimeter 



One-thousandth part of a meter, 0.0394 inch. 



Millimicron (mu) 



One-thousandth part of a Micron (q. v.). 



Mima-type Microrelief 



A type of microrelief characterized by low mounds or 

 soil pimples, named after the mounds in Mima prairie in 

 western Washington. 



Mimesis 



The kind of behaviour in which like elicits like, involv- 

 ing hereditary patterns. 



Mimetic 



Refers to mimicking behaviour, cf. Allelomimetic. 



Mimicry 



(1) Batesian: The kind of behaviour in which an edible 

 species escapes death by its close resemblance in appearance 

 to an inedible species. (2) Mullerian: The kind of be- 



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