oct-


variant of octa- or octo- before a vowel: octal.

QUIZZES

THIS PSAT VOCABULARY QUIZ IS PERFECT PRACTICE FOR THE REAL TEST

In our third teacher-created PSAT practice test there are new and unique vocabulary terms you may have never heard of! Can you guess what they mean?
Question 1 of 10
seclusion

Definition for oct- (2 of 3)

oct.

abbreviation

octavo.

Definition for oct- (3 of 3)

Oct.

abbreviation

October.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for oct- (1 of 2)

Oct

abbreviation for

October

British Dictionary definitions for oct- (2 of 2)

oct-

combining form

(used before a vowel) a variant of octo-
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