G (letter)

G is the seventh letter of the standard Latin alphabet. It is written in two forms: the capital 'G' and the lowercase 'g'. It is used in many languages worldwide, including Somali.

The sound represented by the letter varies among languages. Generally it represents a velar plosive—a sound made by the back of the tongue and the soft palate—as in the Somali words 'gaal' or 'guri'.

History

The letter G originates from the earlier Latin alphabet, where the letter C was used for both the sounds /k/ and /g/. To distinguish them, a small stroke or extension was added to C, which produced G. The letter took the position that had previously been occupied by Z in the alphabet.

Use in languages

In Romance languages such as Italian, French, and Spanish, the sound of G changes when it precedes the vowels 'e' and 'i', becoming a different sound, like 'j' or 'sh'. English similarly has both pronunciations, as in 'go' and 'gem'. In Somali using the Latin script, G consistently represents a single unvarying sound.

Use in symbols

The letter G is used in many scientific notations. In physics, 'G' denotes the standard acceleration due to gravity on Earth; 'g' is the symbol for gram, a unit of mass. In computer science, 'G' is used for giga, a numerical prefix denoting a large quantity of data.