Character variations
[unassigned: U+244B–U+245F]
Translingual [ edit ] Etymology [ edit ] १ ( 1 , “ éka ” ) ), possibly influenced by Roman numeral Ⅰ .
1 (previous 0 next 2
The cardinal number one , a single thing or unit.
A digit in decimal and every other base numbering system, including binary , octal , and hexadecimal .
15 × 134 = 201 0
001 0 0011 2 (the number 35 in binary notation)0x1 000E001 (the number 268492801 in hexadecimal notation)
( mathematics ) The identity element with respect to multiplication in a ring .
a ×1 = a ( computer science ) Bit state corresponding to binary digit 1, or on or true .( mathematics ) A Boolean or truth value corresponding to true.
f : Bk : B = {0, 1 }( mathematics ) The one-point topological space , trivial ring , trivial group , a category with a single object or a (canonical ) singleton . ( mathematics , set theory ) indicator function set ( phonetics , often superscript) the pitch of a tone , either high or low depending on local convention; '1' is most commonly the highest or lowest pitch (but see 0 )
Synonyms: ˥ ˩ ( phonetics , Sinosphere, often superscript) tone number 1, typically identified with dark level yin ping 陰平 ). May simply be level ping 平 ) if the yin–yang distinction is not made.
Synonym: ꜀ ( linguistics , superscript) accent 1 in Norwegian , Swedish and Limburgish .
Norwegian/Swedish toneme 1 is sometimes transcribed with a simple primary stress mark, that is ˈ Alternative forms [ edit ] The following forms are equivalent as a decimal digit:
The following additional forms are equivalent as a cardinal number:
Derived terms [ edit ]
Derived terms
( select cardinal numbers containing ‘1’ ) 10 , 11 , 12 , ..., 100 , 101 , 102 , ..., 1000 , ..., 10,000 , 100,000 , 1,000,000 , ...( other select numbers containing ‘1’ ) -10 , -1 , -0.1 , ..., 0.1 , 0.01 , 0.001 , ...+1
See also [ edit ] Other representations of 1:
English [ edit ] Pronunciation [ edit ] 1
The number one (1 ).
( Internet slang , leetspeak , sarcastic ) Deliberate misspelling of ! , imitating someone who is too excited to consistently press the shift key while typing exclamation marks. A: sum1 hlep me plz im alwyz l0zin!!1 !?!/?
B: Thts bcuz ur st00pid!!!!!11 !!oneone!!1 !!eleven!1 Synonyms [ edit ] ( sarcastic, deliberate misspelling of ! ) : one eleven Derived terms [ edit ] 1 (plural 1s
( sports , skateboarding , snowboarding , skiing ) Clipping of 180 . ( 180° spin ) Translations [ edit ] deliberate misspelling of !
Chinese [ edit ] Pronunciation [ edit ]
Note :
Pronounced 幺 yāo 0 ' as 'o ' in strings of digits, such as 90210.
Subject to retrograde tone sandhi (see Wikipedia for details):
before fourth tone, pronounced with second tone;
before any other tone, pronounced with fourth tone;
when final (or at the end of a multi-syllable word), pronounced with the original tone (first tone);
when used in a series of numbers, as a part of a number, in dates, or in addresses, pronounced with the original tone (first tone).
When used between two reduplicated words, pronounced with neutral tone. (Chengdu
(Dungan
(Note: Dungan pronunciation is currently experimental and may be inaccurate.) Cantonese
Gan
Hakka
Jin
Min Bei
Note :
cì - colloquial;
ĭ - literary. Min Dong
Note :
siŏh - colloquial;
ék - literary. Min Nan
Note :
chi̍t - colloquial;
it - literary. Note :
zêg8 - colloquial;
ig4, êg4 - literary (ig4 - other places, êg4 - Jieyang). Wu
Xiang
1
one ( gay slang ) top Derived terms [ edit ] Related terms [ edit ] 0 líng 0.5 língdiǎnwǔ Swedish [ edit ] The Nordic pharmacy chain Apotek1 . 1
The number one (1 ).
Synonyms: ett en
( Internet slang , leetspeak , sarcastic ) Deliberate misspelling of ! 1
( nonstandard suffix) -et ( “ singular indefinite nominative; the ” )
( nonstandard suffix) -et ( “ neuter singular ” )
Mog1 av dig.Very mature of you.Derived terms [ edit ] 
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Tenth century “West Arabic” variation of the Nepali form of Hindu-Arabic numerals (compare Devanagari script १ (1, “éka”)), possibly influenced by Roman numeral Ⅰ.
