S is the nineteenth (number 19) letter in the English alphabet.

Meanings for S

On calendars, S is most times the short letter for Saturday or Sunday, or the month September.
In chemistry, S is the symbol for sulphur.
In Wheel of Fortune, S is one of the six letters given to any contestant participating in the "Bonus Round."
S is the letter onomotopeiacally used to characterize the hissing noise known to be made by snakes, e.g. "sssssss..."
Hebrew_people also consider “S” to be sacred because it is the initial of Sameh, God.
S (programming language) is used for statistics

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Other websites

The dictionary definition of s at Wiktionary
Media related to S at Wikimedia Commons

Alphabets (list)

Letters (list)

Letters of the ISO basic Latin alphabet
Aa	Bb	Cc	Dd	Ee	Ff	Gg	Hh	Ii	Jj	Kk	Ll	Mm	Nn	Oo	Pp	Qq	Rr	Ss	Tt	Uu	Vv	Ww	Xx	Yy	Zz
Letter S with diacritics
Śś	Ṥṥ	Ŝŝ	Šš	Ṧṧ	S̈s̈	Ṡṡ	Şş	Ṣṣ	Ṩṩ	Șș	S̩s̩	Ꞩꞩ	Ꟊꟊ	Ȿȿ	Ʂʂ	ᶊ	ᵴ	𝼞	𝼩
Two-letter combinations
Sa	Sb	Sc	Sd	Se	Sf	Sg	Sh	Si	Sj	Sk	Sl	Sm	Sn	So	Sp	Sq	Sr	Ss	St	Su	Sv	Sw	Sx	Sy	Sz
SA	SB	SC	SD	SE	SF	SG	SH	SI	SJ	SK	SL	SM	SN	SO	SP	SQ	SR	SS	ST	SU	SV	SW	SX	SY	SZ
aS	bS	cS	dS	eS	fS	gS	hS	iS	jS	kS	lS	mS	nS	oS	pS	qS	rS	sS	tS	uS	vS	wS	xS	yS	zS
AS	BS	CS	DS	ES	FS	GS	HS	IS	JS	KS	LS	MS	NS	OS	PS	QS	RS	SS	TS	US	VS	WS	XS	YS	ZS
Letter S-digit and digit-letter S combinations
		S0	S1	S2	S3	S4	S5	S6	S7	S8	S9			0S	1S	2S	3S	4S	5S	6S	7S	8S	9S

Multigraphs

Digraphs	Ch Dz Dž Gh IJ Lj Ll Ly Nh Nj Ny Sh Sz Th
Trigraphs	dzs eau
Tetragraphs	ough
Pentagraphs	tzsch

Keyboard layouts (list)

Standards

Lists