## 1

**Word:**1

### 1 Meanings:

- used of a single unit or thing; not two or more; -- representing the number one as an Arabic numeral
- A digit in decimal and every other base numbering system, including binary, octal, and hexadecimal. 15 × 134 = 2010 0010 00112 (the number 35 in binary notation) 0x1000E001 (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 : 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 of a 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 tone (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.
- (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
- (sarcastic, deliberate misspelling of !): one, eleven
- (sports, skateboarding, snowboarding, skiing) Clipping of 180. (180° spin)
- (Hong Kong Cantonese) 1仔 (jat1 zai2)
- The number one (1). Synonyms: ett, en
- (Internet slang, leetspeak, sarcastic) Deliberate misspelling of !
- (nonstandard suffix) -et (“singular indefinite nominative; the”)
- (nonstandard suffix) -et (“neuter singular”)
- mog1 (“mature”) (slang)