oct-
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oct-
1 American
oct.
2
American
abbreviation
Oct.
3
American
abbreviation
Oct
1
British
abbreviation
oct-
2
British
combining form
Usage
What does oct- mean? Oct- is a combining form used like a prefix meaning “eight.” It is used in a great many scientific and technical terms. Octo- comes from the Greek oktṓ, meaning “eight.” The Latin equivalent, which is almost identical in spelling and pronunciation, is octō. What are variants of oct-?Oct- is a variant of octa- or octo-, which loses its -a- or -o- when combined with words or word elements beginning with vowels. Want to know more? Check out our Words That Use entries for both octa- and octo-.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
OCT scanners -- used in most high street opticians -- use light waves to create a cross-sectional picture of the retina, displaying each individual layer, within a few minutes.
From Science Daily • Dec. 5, 2023
OCT scans, which are widely used by opticians, are useful for monitoring eye health as they show layers of cells below the skin's surface.
From BBC • Aug. 22, 2023
OCT 24: At a public event attended by Chinese regulators, Ma says the financial and regulatory system stifled innovation and must be reformed to fuel growth.
From Reuters • Jun. 9, 2022
Thouvenin used his upgraded OCT technique to track the movement and metabolism of subcellular organelles and other structures inside living retina tissue from mice and monkeys.
From Nature • Sep. 18, 2018
I knew from the training film that I’d just been fitted with an OCT.
From "Ready Player One: A Novel" by Ernest Cline
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
