sf
sf is the alternative form of SF.
sf is the abbreviation of significant figure(s).
Noun (1) capitalized: SF
SF (countable and uncountable, plural SFs)
- Initialism of science fiction or speculative fiction, often used to avoid having to choose between the two.
- Initialism of square feet.
- Initialism of spontaneous fission.
- Initialism of small forward.
- Abbreviation of semifinal.
- Initialism of single female.
Proper noun capitalized: SF
SF
- Initialism of San Francisco.
- Initialism of Sinn Féin; an Irish political party.
- Initialism of Street Fighter.
- Initialism of Super Formula.
Adjective capitalized: SF
SF
Noun (2) capitalized: Sf
Sf (plural Sfs)
- a book size one sixty-fourth of the size of a standard uncut sheet of paper (less 7.5 cm (3") in height)
- Synonyms:
- 64mo, sixty-fourmo, sexagesimo-quarto, 64º
Synonyms of sf
Forms of sf
| plural | SFs |
|---|---|
| plural | Sfs |
Origin of sf
Abbreviation of sixty-fourth
Words formed from sf
Phrases with sf
Questions about sf
- What does sf mean?
- Sf means a book size one sixty-fourth of the size of a standard uncut sheet of paper (less 7.5 cm (3") in height).
- What is sf the alternative form of?
- Sf is the alternative form of SF.
- What part of speech is sf?
- Sf can be a noun, a proper noun or an adjective.
- What is the plural of sf?
- The plural of sf is SFs.
Words near sf in the dictionary
Source and license
Adapted from Wiktionary: sf (page history and authors); SF (page history and authors); Sf (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Cite this entry: “sf.” Word.ws, https://word.ws/sf. Based on Wiktionary, CC BY-SA 4.0.