second, sec, s (noun)

1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites

sulfur, S, sulphur, atomic number 16 (noun)

an abundant tasteless odorless multivalent nonmetallic element; best known in yellow crystals; occurs in many sulphide and sulphate minerals and even in native form (especially in volcanic regions)

south, due south, southward, S (noun)

the cardinal compass point that is at 180 degrees

mho, siemens, reciprocal ohm, S (noun)

a unit of conductance equal to the reciprocal of an ohm

S, s (noun)

the 19th letter of the Roman alphabet

randomness, entropy, S (noun)

(thermodynamics) a thermodynamic quantity representing the amount of energy in a system that is no longer available for doing mechanical work

"entropy increases as matter and energy in the universe degrade to an ultimate state of inert uniformity"

S (Noun)

American Library Association for sextodecimo, a book size, 15-17.5 cm in height.

s (Verb)

Replace the following string with the one that appears after it.

S

S is the nineteenth letter in the ISO basic Latin alphabet.

S

S (named ess, plural esses) is the 19th letter in the Modern English alphabet and the ISO basic Latin alphabet.