noun a colored patch or dirty mark that is difficult to remove
verb to leave a mark on something that is difficult to remove
In medicine, a stain refers to a colored dye or substance used in laboratory tests to highlight specific structures or cells under a microscope.
In art, a stain can refer to a discoloration on a surface that is often used intentionally by artists to create visual effects or enhance the texture of a work.
In chemistry, a stain is a discoloration or discoloring agent used to color materials or surfaces for various purposes such as microscopic examination or identification of substances.
In woodworking, a stain is a coloring agent applied to wood surfaces to enhance or change their color while still allowing the natural grain to show through.
In textiles, a stain is an unwanted mark or discoloration on fabric that can be difficult to remove, often requiring special cleaning techniques.
In the context of a writer, 'stain' may be used to describe a mark or discoloration on a surface that can be incorporated into a story to add depth or symbolism.
A psychologist may use 'stain' metaphorically to describe emotional or psychological trauma that has left a lasting impact on a person's mental well-being.
An interior designer may use 'stain' to refer to a blemish or discolouration on furniture or fabrics that needs to be addressed or hidden in the design of a space.
In chemistry, 'stain' is used to describe a colored chemical compound that is used to highlight or differentiate structures when studying biological samples under a microscope.
For a painter, 'stain' can refer to a type of paint or finish that is applied to wood surfaces to enhance the natural grain and color while providing protection.