what is the meaning of this word, digraph.

http://dictionary.reference.com/browse/digraph?&qsrc=

a digraph is A pair of letters representing one single speech sound. for example ea in meat.

The term "digraph" refers to a linguistic concept. Specifically, it is a combination of two letters representing a single sound or phoneme. Digraphs are commonly found in many languages, including English. For instance, in English, the "sh" in "ship," the "ch" in "chat," and the "th" in "think" are all examples of digraphs.

To understand the meaning of the word "digraph" in general, you can consult a dictionary. You can do this by using an online dictionary website or application, or by searching for the word "digraph" and the term "meaning" in a search engine. The search results should display definitions and explanations of the word "digraph," helping you gain a better understanding of its significance.