Pronunciation: [ɪn ɡɹˈe͡ɪn] (IPA) 
The spelling of the word "in grain" may seem confusing, but it's actually quite simple. The word is spelled as two separate words, "in" and "grain," and pronounced as /ɪnˈɡreɪn/. The "in" part of the word means "inside" or "within," while "grain" refers to the texture of wood or the small seeds of cereal plants. Together, "in grain" can mean something that is deeply embedded or ingrained within a particular substance or culture.
Ingrain is a verb which refers to the act of deeply embedding or instilling a particular trait, habit, belief, or characteristic in someone or something. It describes the process of firmly establishing a quality or behavior in a person or an object, often to the point where it becomes an integral part of their nature or identity.
The term originated from the literal meaning of "grain," which is the texture or pattern found in various materials, particularly wood. In the same way, when something is ingrained, it becomes deeply woven or impressed in the fabric of an individual or an object's being, leaving an indelible mark.
For instance, a person's deeply ingrained values are the set of principles that they have internalized over time, becoming an inherent part of their moral compass. Similarly, an idea may become ingrained in society when it is widely accepted and unquestioned by the majority of people. In these cases, the belief or concept is so deeply rooted that it is difficult to change or alter.
In summary, "in grain" is a term used to describe the process of deeply embedding a quality, trait, habit, belief, or characteristic in someone or something, to the extent that it becomes an integral and inseparable part of their nature or identity.
The word "in grain" is derived from the Middle English term "ingreynen", which was used in the late 14th century as "ingrane". It ultimately comes from the Old French word "engrain", meaning "dyed in grain" or "dyed with a natural dye". The term "in grain" originally referred to fabrics or materials dyed in a strong, fast color like purple or scarlet using a dye made from the kermes insect or the madder plant. Over time, the term "in grain" began to be used more broadly to describe anything that was deeply and permanently imbued with color or a particular quality.
