blue stain

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

noun

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

Example Sentences

The face and body were painted with red and white ochre and a blue stain.

From Project Gutenberg

The young trapper had, in effect, hit the mark in the very centre, as the blue stain of the bullet testified.

From Project Gutenberg

He looked out to where a channel made a deep blue stain through the paler cerulean of the sea.

From Project Gutenberg

They opened the shirt tenderly, and there, on the right breast, saw a dull blue stain with a crimson thread in the middle of it.

From Project Gutenberg

They may be counted in leukæmic blood with the aid of the triacid or eosine-methylene blue stain.

From Project Gutenberg