What is it called when you describe a word or phrase by making words or phrases beginning with each letter of the original word or phrase?

Phrase with 38?  Another word for describe?  A word describe correlation?  A word to describe some one?  What is another word for describe?  What is another phrase for any size?  Shortened forms of a written word or phrase?  Words to describe you beginning with the letter k?  What words or phrases contain the word grey or gray?  A word phrase or structure that is repeated in poetry?  Describe the phrase a man is known by the company he keeps?  Which is not a transitional word or phrase finally in conclusion?  Grammatical form in which a thing is renamed in a word phrase or clause?  What is it called when you make a word from the first letter of other words?  What is it called when describing a word with each letter in the original word?  This is a figure of speech in which one word or phrase is substituted for another with which it is closely associated?  What is it called when you use the first letters of the words in a phrase to make a new word?  What is it called when almost every word of a phrase starts with the same letter or sound?  Which of the following words or phrases would you not use when making a generalization?