s

The nineteenth letter of the English alphabet and the fifteenth consonant, representing the voiceless alveolar sibilant sound /s/ as in 'sun' or the voiced /z/ as in 'rose'. As a grapheme, 'S' is one of the most frequently used letters in English, crucial for forming plurals, possessives, and third-person singular verb conjugations. Its curved, serpentine shape resembles a snake. It functions as an abbreviation for south, small size, a symbol for sulfur in chemistry, a unit of time in seconds, and the nineteenth item in a sequence.

ruДевятнадцатая буква английского алфавита, согласная. Чаще всего обозначает глухой свистящий звук /s/, но может озвончаться. Одна из самых частых букв, служит для образования множественного числа и притяжательного падежа. Используется как сокращение для юга, маленького размера, серы (химия) и секунды (время).esDecimonovena letra del alfabeto inglés, consonante. Generalmente denota el sonido sibilante sordo /s/, pero puede sonorizarse. Es una de las letras más frecuentes y sirve para formar el plural y el posesivo. Se usa como abreviatura de sur, talla pequeña, azufre (química) y segundo (tiempo).frDix-neuvième lettre de l'alphabet anglais, consonne. Désigne le plus souvent le son sourd /s/, mais peut se voiser. L'une des lettres les plus fréquentes, sert à former le pluriel et le possessif. S'emploie comme abréviation pour sud, petite taille, soufre (chimie) et seconde (temps).deDer neunzehnte Buchstabe des englischen Alphabets, ein Konsonant. Er steht meist für den stimmlosen zischenden Laut /s/, kann aber auch stimmhaft werden. Er ist einer der häufigsten Buchstaben und dient zur Bildung des Plurals und des Possessivs. Außerdem wird er als Abkürzung für Süden, kleine Größe, Schwefel (Chemie) und Sekunde (Zeit) verwendet.ptDécima nona letra do alfabeto inglês, consoante. Geralmente representa o som sibilante surdo /s/, mas pode sonorizar. É uma das letras mais frequentes, usada para formar o plural e o caso possessivo. Também é usada como abreviação de sul, tamanho pequeno, enxofre (química) e segundo (tempo).zh英语字母表的第十九个字母，为辅音字母，通常表示清齿龈擦音 /s/，也可浊化。它是英语中最常用的字母之一，用于构成复数形式和所有格。还可用作南方、小号、硫（化学元素）和秒（时间单位）的缩写。arالحرف التاسع عشر في الأبجدية الإنجليزية، وهو حرف ساكن. يشير غالبًا إلى صوت صفيري مهموس /s/ وقد يُنطق مجهورًا في بعض المواضع، ويُستخدم لصياغة الجمع والإضافة، كما يُرمز به إلى الجنوب والصغير الحجم والكبريت (كيمياء) والثانية (زمن).

1. The nineteenth letter of the English alphabet A1 formal

   The uppercase or lowercase character (S, s) that constitutes the nineteenth symbol in the Latin-based English alphabet, classified as a consonant. Its primary sound is a voiceless alveolar sibilant /s/, though it voices to /z/ in certain positions. It is the most common letter for forming plurals (cats, dogs) and possessives (John's). Its serpentine shape gives it the nickname 'the snake letter'.

   • The word 'sun' begins with the letter S.
   • Add an S to 'cat' to make it plural.
   • The hissing sound of S resembles a snake.
   • In the NATO phonetic alphabet, S is 'Sierra'.
   • The lowercase s curves like a ribbon in cursive writing.

   ruДевятнадцатая буква английского алфавитаesLetra SfrLa dix-neuvième lettre de l'alphabet anglaisdeNeunzehnter Buchstabe des englischen AlphabetsptDécima nona letra do alfabeto inglêszh英语字母表的第十九个字母arالحرف التاسع عشر من الأبجدية الإنجليزية

2. An abbreviation for south A1 formal

   The uppercase letter S used as the standard abbreviation for the cardinal direction south. It is found on compasses, maps, weather reports, and in regional designations. It is the opposite of N for north and is a fundamental element of geographic and navigational literacy.

   • The compass needle points to N, so S is the opposite direction.
   • They migrated S for the winter.
   • The S side of the mountain gets more sun.
   • The map legend has N at the top and S at the bottom.
   • South Carolina is abbreviated SC, with S standing for South.

   ruЮг (направление)esS, abreviatura de surfrSud (abréviation)deSüd (Himmelsrichtung)ptSul (direção)zh南（方向）arالجنوب (اتجاه)

3. An abbreviation for small size A1 informal

   The letter S used as a standard label in clothing, food, and product sizing to indicate a small size, typically representing the smallest option in a range of standard sizes. It is positioned below medium (M) and often has an extra-small (XS) variant. It is universally recognized in retail and service industries.

   • I need a smaller size, please—this M is too big, do you have an S?
   • The coffee sizes are S, M, and L.
   • She always wears an S in designer dresses.
   • An S fries is perfect for a light snack.
   • The S bottle of water is 330 ml.

   ruМаленький размер (S)esS, talla pequeñafrS (taille petite)deKleine Größe (S)ptTamanho pequeno (S)zh小号（S）arالمقاس الصغير (S)

4. The symbol for sulfur in chemistry B1 formal scientific

   The one-letter chemical symbol representing the element sulfur (or sulphur), atomic number 16. It is a bright yellow, non-metallic solid at room temperature. It is the tenth most abundant element in the universe and is essential for life, occurring in amino acids and many proteins. It is widely used in vulcanization of rubber, gunpowder, and sulfuric acid production.

   • Sulfur, symbolized by S, has a distinct yellow color.
   • Sulfuric acid (H₂SO₄) contains one S atom.
   • The rotten egg smell is due to hydrogen sulfide (H₂S).
   • S is an essential macronutrient for plants alongside N, P, and K.
   • Gunpowder is a mixture of charcoal, saltpeter, and S.

   ruСера (химический элемент)esSímbolo químico del azufrefrS (symbole chimique du soufre)deSchwefel (chemisches Symbol)ptEnxofre (elemento químico)zh硫（化学元素）arالكبريت (عنصر كيميائي)

5. The abbreviation for seconds (time) A2 formal scientific

   The lowercase letter s used as the international standard symbol for the second, the base unit of time in the International System of Units (SI). It is defined by the caesium-133 atomic clock. It is used globally in science, engineering, and everyday life for precise measurement of short time intervals and as a denominator in speed and frequency units.

   • The race was won in just 9.58 s.
   • The exposure time for the photograph was 1/1000 s.
   • The light turns red for 30 s before changing to green.
   • He ran the 40-yard dash in 4.5 s.
   • The SI base unit for time is the second, symbolized by s.

   ruСекунда (единица времени)esSímbolo del segundo (unidad de tiempo)frsymbole de la seconde (unité de temps)deSekunde (Zeiteinheit)ptSegundo (unidade de tempo)zh秒（时间单位）arالثانية (وحدة زمنية)