Greek alphabet

The Greek alphabet has been used to write the Greek language since around the 8th century BC. It came from the Phoenician alphabet. It is the oldest known alphabetic script that writes vowels as well as consonants. This writing system helped people in ancient Greece share ideas and stories.

The Greek alphabet has 24 letters. Each letter has an uppercase and lowercase form. These letters are: Α α, Β β, Γ γ, Δ δ, Ε ε, Ζ ζ, Η η, Θ θ, Ι ι, Κ κ, Λ λ, Μ μ, Ν ν, Ξ ξ, Ο ο, Π π, Ρ ρ, Σ σ ς, Τ τ, Υ υ, Φ φ, Χ χ, Ψ ψ, Ω ω.

Today, the Greek alphabet is used not only for writing Greek. It also gives important symbols for mathematics and science. These symbols help people around the world share complex ideas.

Letters

Main articles: Greek orthography and Pronunciation of Ancient Greek in teaching

Further information: Manners of articulation

The Greek alphabet has letters that help us say words. In old and new Greek, each letter usually makes the same sound. This makes it easier to guess how to say a word. Long ago, some letters sounded different, but we still write them the same way.

Greek also has special ways to write sounds with two letters together, like putting two vowels next to each other. There are marks above letters that tell us how to say the word, like which syllable is stressed. These marks were made long ago to help read old Greek. Today, we usually use one mark to show the stressed syllable in modern Greek.

History

Origins

Main article: History of the Greek alphabet

The Greek alphabet started around the late 9th or early 8th century BC. It came from the Phoenician alphabet, which only wrote consonants. The Greeks added symbols for vowels. This made it the first alphabet to write both vowels and consonants. This helped people express their language more clearly.

Archaic variants

Main article: Archaic Greek alphabets

At first, different places in Greece used their own versions of the alphabet. Over time, one version from a place called Ionia became the standard. By the end of the 4th century BC, this version, with 24 letters from alpha to omega, was used all over the Greek-speaking world. This is the alphabet we still use for Greek today.

The Greek alphabet is the ancestor of many other alphabets, including the Latin alphabet.

Derived alphabets

The Greek alphabet helped create many other writing systems. The Latin alphabet started from an old form of Greek letters brought to Italy by Greek settlers. Other alphabets like the Gothic alphabet, Glagolitic alphabet, and Cyrillic script also grew from Greek letters. The Coptic alphabet adds some letters from an old Egyptian script and is still used in Egypt today.

Many ancient alphabets from places like Asia Minor were also shaped by the Greek alphabet. Even though they looked different or used sounds in new ways, they all have roots in the Greek letters we know today.

Other uses

Use for other languages

The Greek alphabet writes many languages besides Greek. In old times, it wrote Thracian and Gaulish. In the Middle Ages, it wrote Old Nubian and South Slavic dialects. Recently, it wrote Albanian and Judaeo-Spanish.

In mathematics and science

Greek letters are symbols in mathematics and science. For example, π (pi) means the size of a circle’s edge compared to its width. Σ (sigma) means summation. The Greek alphabet named hurricanes in busy seasons. It also named types of the SARS-CoV-2 virus.

Astronomy

In astronomy, Greek letters name stars in groups of stars called constellations. The brightest star is usually called Alpha, then the next is Beta, and so on. For example, the brightest star in Centaurus is called Alpha Centauri.

International Phonetic Alphabet

Some Greek letters are used in the International Phonetic Alphabet. These symbols help describe how words sound.

Use as numerals

Greek letters were also used for numbers. The first nine letters were the numbers 1 to 9. The next nine were 10 to 90. The next nine were 100 to 900. Special symbols were used for numbers like 6 and 900.

Use by student fraternities and sororities

In North America, student groups called fraternities and sororities use Greek letters in their names. This started with the Phi Beta Kappa society in 1776. Each new group gets a Greek letter, starting with A and going through the alphabet.

Glyph variants

Some Greek letters can look different depending on how they are written or printed. These changes come from old handwriting styles.

For example, the letter beta (β) can sometimes look curled when it is in the middle of a word. The letter sigma has two forms: σ is used inside words, and ς is used at the end of words. There are also special shapes for other letters like theta, kappa, and phi, which are used in science and math.

Computer encodings

Computers use special systems to show Greek letters. Two main systems are ISO/IEC 8859-7 and Unicode. ISO 8859-7 is good for modern Greek writing. Unicode works for both modern and ancient Greek, including special characters.

Unicode has two sets of Greek letters. The first set, called "Greek and Coptic," is enough for writing modern Greek. It also includes some older letters and symbols. The second set, "Greek Extended," helps write ancient Greek with special marks above the letters. This is useful for studying old texts.