oct-

¹ American  

1. variant of octa- or octo- before a vowel.

   octal.

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oct. ² American  

abbreviation

1. octavo.

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Oct. ³ American  

abbreviation

1. October.

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Oct ¹ British  

abbreviation

1. October

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oct- ² British  

combining form

1. (used before a vowel) a variant of octo-

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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

The Chemours CC -1.58%decrease; red down pointing triangle spinoff happened months before he was named CEO on Oct.

From The Wall Street Journal

Here is how forward P/E ratios and rolling 12-month consensus EPS estimates have changed for the largest 20 “tech stocks” in the S&P 500 since Oct.

From MarketWatch

Here is how forward P/E ratios and rolling 12-month consensus EPS estimates have changed for the largest 20 “tech stocks” in the S&P 500 since Oct.

From MarketWatch

The base began with a bearish dark cloud cover candle on Oct.

From Barron's

The base began with a bearish dark cloud cover candle on Oct.

From Barron's