Dictionary.com

sci-fi

[ sahy-fahy ]
/ ˈsaɪˈfaɪ /
Informal.
Save This Word!
See synonyms for sci-fi on Thesaurus.com
adjective
of or relating to science fiction: a writer of sci-fi books.
noun
science fiction.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?
His boss, whom he admires, is waiting to meet with him about the big project.
His boss, who he admires, is waiting to meet with him about the big project.
TAKE THE QUIZ TO FIND OUT

Origin of sci-fi

First recorded in 1950–55; by shortening

Words nearby sci-fi

scientism, scientist, scientistic, scientize, Scientology, sci-fi, scil., scilicet, Scilla, scillism, Scillonian
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Words related to sci-fi

futurism, space opera

How to use sci-fi in a sentence

British Dictionary definitions for sci-fi

sci-fi
/ (ˈsaɪˌfaɪ) /
noun
short for science fiction
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
FEEDBACK