plural s's or ss
ˈe-səz
often capitalized, often attributive
1
a
: the 19th letter of the English alphabet
b
: a graphic representation of this letter
c
: a speech counterpart of orthographic s
2
: a graphic device for reproducing the letter s
3
: one designated s especially as the 19th in order or class
4
[abbreviation for satisfactory]
a
: a grade rating a student's work as satisfactory
b
: one graded or rated with an S
5
: something shaped like the letter S
1
sabbath
2
saint
3
schilling
4
scruple
5
second; secondary
6
section
7
senate
8
series
9
shilling
10
[Latin signa] label
11
siemens
12
signor
13
sine
14
singular
15
small
16
smooth
17
snow
18
society
19
son
20
sou
21
south; southern
22
23
subject
24
symmetrical
1
satisfactory
2
short
3
standard deviation of a sample
4
svedberg
sulfur
-s
5 of 7plural noun suffix
after a voiceless consonant s,
after a voiced consonant or a vowel z
—used to form the plural of most nouns that do not end in s, z, sh, ch, or postconsonantal y
heads
books
boys
beliefs
, to form the plural of proper nouns that end in postconsonantal yMarys
, and with or without a preceding apostrophe to form the plural of abbreviations, numbers, letters, and symbols used as nounsMCs
PhD's
4s
the 1940's
$s
B's
compare -es entry 1
-s
6 of 7adverb suffix
—used to form adverbs denoting usual or repeated action or state
always at home Sundays
mornings he stops by the newsstand
—used to form the third person singular present of most verbs that do not end in s, z, sh, ch, or postconsonantal y
falls
takes
plays
compare -es entry 2
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Merriam-Webster unabridged
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