the word is ...(brace yourself!) Pneumonoultramicroscopicsilicovolcanoconiosis.
It has 45 letters and is the longest word in most major English dictionaries.
Superacknowledgement contains 16 different letters. Semiautobiographical contains 15 different letters.
There are no English words that contain all the letters of the alphabet.
There is no English word that contains all 26 letters of the Alphabet.
There is no word in the English language which has all letters of the alphabet.
There are 8 letters in alphabet, or 7 "unique" letters (A appears twice). There are 26 letters in the English (Roman/Latin) alphabet.
Clarification needed. An alphabet is a complete set of letters in a language. The English alphabet is ABCDEFGHIJKLMNOPQRSTUVWXYZ. This is not in the word 'computer'. If you are asking what the letters in the word 'computer' stand for--they stand for sounds and units of meaning in the English language.
Z is the 26th letter of the English Alphabet.
Clarification needed. An alphabet is a complete set of letters in a language. The English alphabet is ABCDEFGHIJKLMNOPQRSTUVWXYZ. This is not in the word 'computer'. If you are asking what the letters in the word 'computer' stand for--they stand for sounds and units of meaning in the English language.
2
De, on = 2
Cat
You might be looking for the word "alphabet." I realize that's eight letters.
sixty-twelve