Er is a letter of the Cyrillic alphabet

Cyrillic alphabet

The Cyrillic script or azbuka is an alphabetic writing system developed in the First Bulgarian Empire during the 10th century AD at the Preslav Literary School...

.

It commonly represents the alveolar trill

Alveolar trill

The alveolar trill is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents dental, alveolar, and postalveolar trills is , and the equivalent X-SAMPA symbol is r. It is commonly called the rolled R, rolling R, or trilled R...

 /r/, like the "rolled" sound in the Scottish pronunciation of ⟨r⟩ in "curd".

History

The Cyrillic letter Er was derived from the Greek letter Rho

Rho (letter)

Rho is the 17th letter of the Greek alphabet. In the system of Greek numerals, it has a value of 100. It is derived from Semitic resh "head"...

 (Ρ ρ).

The name of Er in the Early Cyrillic alphabet

Early Cyrillic alphabet

The Early Cyrillic alphabet is a writing system developed in the First Bulgarian Empire in the 9th or 10th century to write the Old Church Slavonic liturgical language...

 was (rĭci), meaning "speak".

In the Cyrillic numeral system

Cyrillic numerals

The Cyrillic numerals are a numbering system derived from the Cyrillic script, used by South and East Slavic peoples. The system was used in Russia as late as the early 18th century when Peter the Great replaced it with Arabic numerals....

, Er had a value of 100.

Form

The Cyrillic letter Er (Р р) looks similar

Homoglyph

In typography, a homoglyph is one of two or more characters, or glyphs, with shapes that either appear identical or cannot be differentiated by quick visual inspection. This designation is also applied to sequences of characters sharing these properties....

 to the Greek letter Rho (Ρ ρ) and the same as the Latin letter P

P

P is the sixteenth letter of the basic modern Latin alphabet.-Usage:In English and most other European languages, P is a voiceless bilabial plosive. Both initial and final Ps can be combined with many other discrete consonants in English words...

 (P p).

Usage

As used in the alphabets of various languages, Xxx represents the following sounds:

• alveolar trill
  Alveolar trill
  The alveolar trill is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents dental, alveolar, and postalveolar trills is , and the equivalent X-SAMPA symbol is r. It is commonly called the rolled R, rolling R, or trilled R...
  
   /r/, like the "rolled" sound in the Scottish pronunciation of ⟨r⟩ in "curd"
• palatalized alveolar trill
  Alveolar trill
  The alveolar trill is a type of consonantal sound, used in some spoken languages. The symbol in the International Phonetic Alphabet that represents dental, alveolar, and postalveolar trills is , and the equivalent X-SAMPA symbol is r. It is commonly called the rolled R, rolling R, or trilled R...
  
   /rʲ/

The pronunciations shown in the table are the primary ones for each language; for details consult the articles on the languages.

Language	Position in alphabet	Pronunciation
Belarusian Belarusian language The Belarusian language , sometimes referred to as White Russian or White Ruthenian, is the language of the Belarusian people...	18th	/r/
Bulgarian Bulgarian language Bulgarian is an Indo-European language, a member of the Slavic linguistic group.Bulgarian, along with the closely related Macedonian language, demonstrates several linguistic characteristics that set it apart from all other Slavic languages such as the elimination of case declension, the...	17th	/r/, /rʲ/
Macedonian Macedonian language Macedonian is a South Slavic language spoken as a first language by approximately 2–3 million people principally in the region of Macedonia but also in the Macedonian diaspora...	21st	/r/
Russian Russian language Russian is a Slavic language used primarily in Russia, Belarus, Uzbekistan, Kazakhstan, Tajikistan and Kyrgyzstan. It is an unofficial but widely spoken language in Ukraine, Moldova, Latvia, Turkmenistan and Estonia and, to a lesser extent, the other countries that were once constituent republics...	18th	/r/, /rʲ/
Serbian Serbian language Serbian is a form of Serbo-Croatian, a South Slavic language, spoken by Serbs in Serbia, Bosnia and Herzegovina, Montenegro, Croatia and neighbouring countries....	20th	/r/
Ukrainian Ukrainian language Ukrainian is a language of the East Slavic subgroup of the Slavic languages. It is the official state language of Ukraine. Written Ukrainian uses a variant of the Cyrillic alphabet....	21st	/r/, /rʲ/

Related letters and other similar characters

• Ρ ρ/ : Greek letter Rho
• R r : Latin letter R
  R
  R is the eighteenth letter of the basic modern Latin alphabet.-History:The original Semitic letter may have been inspired by an Egyptian hieroglyph for tp, "head". It was used for by Semites because in their language, the word for "head" was rêš . It developed into Greek Ρ and Latin R...
  
  
• P p : Latin letter P
  P
  P is the sixteenth letter of the basic modern Latin alphabet.-Usage:In English and most other European languages, P is a voiceless bilabial plosive. Both initial and final Ps can be combined with many other discrete consonants in English words...
  
  

Computing codes

character	Р		р
Unicode name	CYRILLIC CAPITAL LETTER ER		CYRILLIC SMALL LETTER ER
character encoding	decimal	hex	decimal	hex
Unicode Unicode Unicode is a computing industry standard for the consistent encoding, representation and handling of text expressed in most of the world's writing systems...	1056	0420	1088	0440
UTF-8 UTF-8 UTF-8 is a multibyte character encoding for Unicode. Like UTF-16 and UTF-32, UTF-8 can represent every character in the Unicode character set. Unlike them, it is backward-compatible with ASCII and avoids the complications of endianness and byte order marks...	208 160	D0 A0	209 128	D1 80
Numeric character reference Numeric character reference A numeric character reference is a common markup construct used in SGML and other SGML-related markup languages such as HTML and XML. It consists of a short sequence of characters that, in turn, represent a single character from the Universal Character Set of Unicode...	Р	Р	р	р
KOI8-R KOI8-R KOI8-R is an 8-bit character encoding, designed to cover Russian, which uses the Cyrillic alphabet. It also happens to cover Bulgarian, but is not used since CP1251 is accepted. A derivative encoding is KOI8-U, which adds Ukrainian characters...  and KOI8-U KOI8-U KOI8-U is an 8-bit character encoding, designed to cover Ukrainian, which uses the Cyrillic alphabet. It is based on KOI8-R, which covers Russian and Bulgarian, but replaces eight graphic characters with four Ukrainian letters Ґ, Є, І, and Ї in both upper case and lower case.In Microsoft Windows,...	242	F2	210	D2
Code page 855 Code page 855 Code page 855 is a code page used under MS-DOS to write Cyrillic script. This code page is not used much.-Code page layout:...	226	E2	225	E1
Code page 866 Code page 866 Code page 866 is a code page used under MS-DOS to write Cyrillic script. It is based on the "alternative character set" of GOST 19768-87...	144	90	224	E0
Windows-1251 Windows-1251 Windows-1251 is a popular 8-bit character encoding, designed to cover languages that use the Cyrillic alphabet such as Russian, Bulgarian, Serbian Cyrillic and other languages...	208	D0	240	F0
ISO-8859-5	192	C0 224	E0
Macintosh Cyrillic	144	90	240	F0