oct-

¹

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

   octal.

oct.

²

abbreviation

1. octavo.

Oct.

³

abbreviation

1. October.

Oct

¹

abbreviation

1. October

oct-

²

combining form

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

Example Sentences

YouTube content creators Diana Extein, left, and Candice Waltrip, right, film clothing try-ons during YouTube’s Holiday House shopping event at Google Spruce Goose on Thursday, Oct.

Read more on Los Angeles Times

YouTube content creator Peja Anne, 15, makes a video with beauty products as her mom Kristin Roeder films during YouTube’s Holiday House shopping event at Google Spruce Goose on Thursday, Oct.

Read more on Los Angeles Times

Airports across the United States have been experiencing significant flight delays recently because of a shortage of air traffic controllers, who have been required to work without pay since a government shutdown began on Oct.

Read more on Salon

Central banks around the world added 19 metric tons to their global reserves in August, according to data from the World Gold Council dated Oct.

Read more on MarketWatch

Margalit was killed during the Oct.

Read more on The Wall Street Journal

When To Use

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-.