Буква D

dБуква D английского алфавита размещается на четвертом месте в общем списке.

В одиночном положении буква произносится как [di:], что можно записать русскими значками как [ди].

Правила чтения буквы d английского алфавита

 

В словах буква читается по-разному:

  • В большинстве случаев, особенно перед гласной знак произносится звонко, как [d]: down – вниз.
  • В сочетании букв dge d произносится следующим образом [dʒ]: knowledge – знание.
  • В окончаниях ed буква оглушается и произносится как [t]: cooked – приготовленный.
  • Является немой в сочетания с буквой n – nd или dn: Wednesday — среда.

История буквы начинается в финикийском руническом алфавите, где знак треугольника обозначал дверь и назывался «далет». Древние Греки назвали эту букву «дельта», а треугольник перевернули вправо. Древние римляне придали этому символу современный вид, округлив треугольник — D. А позже появилось и современное строчное написание – d. В таком виде буква перешла в английский и другие современные языки.

Интересно! Буква D применяется для обозначения многих предметов, понятий и явлений в науках:

  • В римской нумерологии D означает цифру 500.
  • В математике D заглавная обозначает дискриминант.
  • В математике и геометрии d прописная символизирует диаметр.
  • В физике d прописная обозначает дейтрон.
  • Заглавная D в физике – символ электрической индукции.
  • В химии – это знак Дейтерия или тяжелого Водорода.
  • В фармакологии и биологии D обозначает витамин

Буква D существует не только в романских языках, которые произошли от латыни, но и в арабском языке, и в славянской письменности. То есть эта буква международная и интернациональная.

Интересно знать: буква E.

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