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blue stain

American  

noun

Plant Pathology.
  1. a serious fungal disease of certain trees that reduces the economic value of the timber, caused by various species of the genus Ceratocystis.


blue stain British  

noun

  1. forestry a bluish discoloration of sapwood caused by growth of fungi

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A blue stain fungus carried in by the pests delivers the coup de grace — a clogged circulatory system.

From Los Angeles Times • Jun. 27, 2022

Pine is also less desirable because of the beetle damage and a blue stain caused by a fungus that occurs with the infestation.

From Los Angeles Times • Dec. 14, 2016

Basophils contain large granules that pick up a dark blue stain and are so common they may make it difficult to see the two-lobed nucleus.

From Textbooks • Jun. 19, 2013

The mountain pine beetle, he found out, carries a fungus that produces a natural blue stain.

From New York Times • Jun. 8, 2013

The electricity decomposed the solution in its passage and left a blue stain on the paper, which corresponded to the dot and dash of the Morse apparatus.

From The Story of Electricity by Munro, John