1. 
   coliform
   <bacteria> Gram-negative, nonsporing, facultative rod-shaped bacteria that ferment lactose with gas formation within 48 hours at 35 degrees C. They are generally small, gram-negative, bacilliform (shaped like rods), facultative anaerobes and they include strains such as Escherichia, Kelbsiella...
   Found op http://www.mondofacto.com/facts/dictionary?coliform
   
   
2. 
   coliform
   (ko´lĭ-form) pertaining to fermentative gram-negative enteric bacilli, sometimes restricted to those fermenting lactose, which are the genera Citrobacter, Enterobacter,Escherichia, and Klebsiella.
   Found op http://www.encyclo.co.uk/local/21001
   
   
3. 
   coliform
   (from the article `bird`) ...species in 1 family of the Northern Hemisphere; foot-propelled diving birds with webbed feet and pointed bills; length 53–91 cm (21–36 ...
   Found op http://www.britannica.com/eb/a-z/c/108
   
   

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