| S | the 19th letter of the English alphabet | en |
| S | compass direction which is the opposite of north isim | en |
| S | first day of the week isim | en |
| S | last day of the week isim | en |
| s | 1/60 of a minute; the basic unit of time adopted under the Systeme International d'Unites | en |
| s | 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) | en |
| s | (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" | en |
| s | the 19th letter of the Roman alphabet | en |
| s | a unit of conductance equal to the reciprocal of an ohm | en |
| s | the cardinal compass point that is at 180 degrees | en |
| s | 19th letter of the English alphabet isim | en |
| s | In a few words it is silent, as in isle, débris | en |
| s | The suffix used to form the plural of most words; as in roads, elfs, sides, accounts | en |
| s | See Guide to pronunciation, §§ 255-261 | en |
| s | With the letter h it forms the digraph sh | en |
| s | A contraction for is or (colloquially) for has | en |
| s | The suffix used to form the third person singular indicative of English verbs; as in falls, tells, sends | en |
| s | An adverbial suffix; as in towards, needs, always, originally the genitive, possesive, ending | en |
| s | It generally has its hissing sound at the beginning of words, but in the middle and at the end of words its sound is determined by usage | en |
| s | Besides these it sometimes has the sounds of sh and zh, as in sure, measure | en |
| s | It has two principal sounds; one a mere hissing, as in sack, this; the other a vocal hissing (the same as that of z), as in is, wise | en |
| s | the nineteenth letter of the English alphabet, is a consonant, and is often called a sibilant, in allusion to its hissing sound | en |
| s | See -'s | en |