Uncial is a majuscule script (written entirely in capital letters) commonly used from the 4th to 8th centuries AD by Latin and Greek scribes. Uncial letters were used to write Greek and Latin, as well as Gothic, and are the current style for Coptic and Nobiin.
The great uncial codices or four great uncials are the only remaining uncial codices that contain (or originally contained) the entire text of the Bible (Old and New Testament) in Greek. They are the Codex Vaticanus in the Vatican Library, the Codex Sinaiticus and the Codex Alexandrinus in the British Library, and the Codex Ephraemi Rescriptus in the Bibliothèque nationale de France in Paris.
The Meroitic script consists of two alphasyllabic scripts developed to write the Meroitic language at the beginning of the Meroitic Period (3rd century BC) of the Kingdom of Kush. The two scripts are Meroitic Cursive, derived from Demotic Egyptian, and Meroitic Hieroglyphs, derived from Egyptian hieroglyphs. Meroitic Cursive is the most widely attested script, constituting ~90% of all inscriptions, and antedates, by a century or more, the earliest surviving Meroitic hieroglyphic inscription. Greek historian Diodorus Siculus (ca. 50 BC) described the two scripts in his Bibliotheca historica, Book III (Africa), Chapter 4. The last known Meroitic inscription is the Meroitic Cursive inscription of the Blemmye king, Kharamadoye, from a column in the Temple of Kalabsha (REM 0094), which has recently been re-dated to AD 410/ 450 of the 5th century. Before the Meroitic Period, Egyptian hieroglyphs were used to write Kushite names and lexical items.
Though the Kingdom of Kush ended with the fall of the royal capital of Meroë, use of the language and Cursive script continued for a time after that event. During the 6th century Christianization of Nubia, the Kushite language and Cursive script were replaced by Byzantine Greek, Coptic, and Old Nubian. The Old Nubian script, derived from the Uncial Greek script, added three Meroitic Cursive letters: ⟨ne⟩, ⟨w(a)⟩, and possibly ⟨kh(a)⟩, for Old Nubian [ɲ], [w – u], and [ŋ] respectively. This addition of Meroitic Cursive letters suggests that the development of the Old Nubian script began at least two centuries before its first full attestation in the late 8th century and/or that knowledge of the Kushite language and script was retained until the 8th century.
Epsilon (/ˈɛpsɪlɒn/ , uppercase Ε, lowercase ε or ϵ; Greek: έψιλον) is the fifth letter of the Greek alphabet, corresponding phonetically to a mid front unrounded vowel IPA: [e̞] or IPA: [ɛ̝]. In the system of Greek numerals it also has the value five. It was derived from the Phoenician letter He 
. Letters that arose from epsilon include the Roman E, Ë and Ɛ, and Cyrillic Е, È, Ё, Є and Э. The name of the letter was originally εἶ (eî [êː]), but it was later changed to ἒ ψιλόν (è psilón 'simple e') in the Middle Ages to distinguish the letter from the digraph ⟨αι⟩, a former diphthong that had come to be pronounced [e], and because the digraph ⟨ει⟩ had become unsuitable due to its own shift to [i]. In Modern Greek, its name has fused into έψιλον (épsilon).
The uppercase form of epsilon is identical to Latin ⟨E⟩ but has its own code point in Unicode: U+0395 Ε GREEK CAPITAL LETTER EPSILON. The lowercase version has two typographical variants, both inherited from medieval Greek handwriting. One, the most common in modern typography and inherited from medieval minuscule, looks like a reversed number "3" and is encoded U+03B5 ε GREEK SMALL LETTER EPSILON. The other, also known as lunate or uncial epsilon and inherited from earlier uncial writing, looks like a semicircle crossed by a horizontal bar: it is encoded U+03F5 ϵ GREEK LUNATE EPSILON SYMBOL. While in normal typography these are just alternative font variants, they may have different meanings as mathematical symbols: computer systems therefore offer distinct encodings for them. In TeX, \epsilon ( ) denotes the lunate form, while \varepsilon ( ) denotes the epsilon number. Unicode versions 2.0.0 and onwards use ɛ as the lowercase Greek epsilon letter, but in version 1.0.0, ϵ was used. The lunate or uncial epsilon provided inspiration for the euro sign, €.
