S (disambiguation)

S is the nineteenth letter of the English alphabet.

S may also refer to:

General

Long s (ſ), a form of the lower-case letter s formerly used where "s" occurred in the middle or at the beginning of a word
-s, a suffix added to some English surnames, originally meaning "son of"
s, the IPA symbol for a voiceless alveolar sibilant sound
S, the subject of an intransitive verb

Integral symbol (∫), used in mathematics to denote integrals and antiderivatives
S combinator in combinatory logic
Sphere
s(n), the aliquot sum of an integer n

S, the chemical symbol for the element Sulfur on the periodic table
S, the symbol for entropy
S, a non-SI unit used to designate molecule size named after the Svedberg sedimentation coefficient
S, a label that denotes one of two chiral center configurations in the R/S system
s, one of the Mandelstam variables, the square of the invariant mass
Siemens (unit), the SI derived unit of electric conductance
S-block of the periodic table, which includes alkali metals, alkaline earth metals, and hydrogen and helium
Spin (physics)
s, an abbreviation for solid

Serine, a standard amino acid abbreviation
ATC code S Sensory organs, a section of the Anatomical Therapeutic Chemical Classification System
S phase or synthesis phase, a period in the cell cycle during interphase

Samsung Galaxy S, the first flagship smartphone of the Samsung Galaxy S series
S (programming language), an environment for statistical computing and graphics
<s>, the opening tag for the HTML element denoting information that is "no longer accurate or no longer relevant", usually rendered as ~~strike-through text~~

S. (Dorst novel), written by Doug Dorst based on story by J.J. Abrams
S. (Updike novel), part of the Scarlet Letter trilogy by John Updike
S (novel series), a 2005-2006 light novel series
"S" Is for Silence, the nineteenth novel in Sue Grafton's "Alphabet mystery" series, published in 2005

S, the pen name of Percy Bysshe Shelley
"S.", the nickname for Solomon Shereshevsky (1886-1958), a Russian journalist, mnemonist, and synesthete notable for his unusual memory abilities