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D, or d, is the fourth letter of the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide.

D (大写);d (小写)，是拉丁字母和英语字母中的第4个字母，与俄语字母的Д同源于希腊字母Δ。

d, letter that has retained the fourth place in the alphabet from the earliest point at which it appears in history. It corresponds to Semitic daleth and Greek delta (Δ). The form is thought to …

Oct 31, 2025 · The letter d is used in the alphabets of many languages, and in several romanization systems of non-Latin scripts to represent the voiced alveolar or dental plosive …

D, d (di) n., pl. Ds D's, ds d's. 1. the fourth letter of the English alphabet, a consonant. 2. any spoken sound represented by this letter.

d. written abbreviation for died: used when giving the dates of someone's birth and death:

For example, 'you had' can be shortened to 'you'd'. 2. -'d is a spoken form of 'would'. It is added to the end of the pronoun which is the subject of the verb. For example, 'I would' can be …

關於與「D」標題相近或相同的條目，請見「D (消歧義)」。 D, d 是 拉丁字母 中的第4個 字母。 Dd的草書形式 閃族語 的 Dâlet 可能是從 雨 或 門 的縮略圖中發展而來的。

D meaning: 1 : the fourth letter of the English alphabet; 2 : a musical note or key referred to by the letter D the second tone of a C-major scale