the fourth letter of the english alphabet, and a vocal consonant. the english letter is from latin, which is from greek, which took it from ph/nician, the probable ultimate origin being egyptian. it is related most nearly to t and th; as, eng. deep, g. tief; eng. daughter, g. tochter, gr. qyga`thr, skr. duhitr. see guide to pronunciation, ã178, 179, 229.-the nominal of the second tone in the model major scale (that in c), or of the fourth tone in the relative minor scale of c (that in a minor), or of the key tone in the relative minor of f.-as a numeral d stands for 500. in this use it is not the initial of any word, or even strictly a letter, but one half of the sign / (or / ) the original tuscan numeral for 1000.