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vEtymology
According to the Oxford English Dictionary, hello is an alteration of hallo, hollo,[5] which came from Old High German "halâ, holâ, emphatic imperative of halôn, holôn to fetch, used especially in hailing a ferryman."[6] It also connects the development of hello to the influence of an earlier form, holla, whose origin is in the French holà (roughly, 'whoa there!', from French là 'there').[7] As in addition to hello, halloo,[8] hallo, hollo, hullo and (rarely) hillo also exist as variants or related words, the word can be spelt using any of all five vowels.[citation needed]

Telephone
The use of hello as a telephone greeting has been credited to Thomas Edison; according to one source, he expressed his surprise with a misheard Hullo.[9] Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting.[10][11] However, in 1877, Edison wrote to T.B.A. David, the president of the Central District and Printing Telegraph Company of Pittsburgh:

Friend David, I do not think we shall need a call bell as Hello! can be heard 10 to 20 feet away.

What you think? Edison - P.S. first cost of sender & receiver to manufacture is only $7.00.[12]

By 1889, central telephone exchange operators were known as 'hello-girls' due to the association between the greeting and the telephone.[11]

Hullo
Hello may be derived from hullo, which the American Merriam-Webster dictionary describes as a "chiefly British variant of hello,"[13] and which was originally used as an exclamation to call attention, an expression of surprise, or a greeting. Hullo is found in publications as early as 1803.[14] The word hullo is still in use, with the meaning hello.[15][16][17][18][19]

Hallo and hollo
Hello is alternatively thought t

hello world

vEtymology
According to the Oxford English Dictionary, hello is an alteration of hallo, hollo,[5] which came from Old High German "halâ, holâ, emphatic imperative of halôn, holôn to fetch, used especially in hailing a ferryman."[6] It also connects the development of hello to the influence of an earlier form, holla, whose origin is in the French holà (roughly, 'whoa there!', from French là 'there').[7] As in addition to hello, halloo,[8] hallo, hollo, hullo and (rarely) hillo also exist as variants or related words, the word can be spelt using any of all five vowels.[citation needed]

Telephone
The use of hello as a telephone greeting has been credited to Thomas Edison; according to one source, he expressed his surprise with a misheard Hullo.[9] Alexander Graham Bell initially used Ahoy (as used on ships) as a telephone greeting.[10][11] However, in 1877, Edison wrote to T.B.A. David, the president of the Central District and Printing Telegraph Company of Pittsburgh:

Friend David, I do not think we shall need a call bell as Hello! can be heard 10 to 20 feet away.

What you think? Edison - P.S. first cost of sender & receiver to manufacture is only $7.00.[12]

By 1889, central telephone exchange operators were known as 'hello-girls' due to the association between the greeting and the telephone.[11]

Hullo
Hello may be derived from hullo, which the American Merriam-Webster dictionary describes as a "chiefly British variant of hello,"[13] and which was originally used as an exclamation to call attention, an expression of surprise, or a greeting. Hullo is found in publications as early as 1803.[14] The word hullo is still in use, with the meaning hello.[15][16][17][18][19]

Hallo and hollo
Hello is alternatively thought t