Test Your Vocabulary

Take Our 10-Question Quiz

Name That Thing

Take our visual vocab quiz

Test Your Knowledge »

True or False?

A quick quiz about stuff worth knowing

Take It Now »

Join Us on FB & Twitter

Get the Word of the Day and More

Facebook | Twitter

cofactor


co·fac·tor

noun \ˈkō-ˌfak-tər\

Definition of COFACTOR

1
: the signed minor of an element of a square matrix or of a determinant with the sign positive if the sum of the column number and row number of the element is even and with the sign negative if it is odd
2
: a substance that acts with another substance to bring about certain effects; especially : coenzyme
3
: something (as diet or a virus) that acts with or aids another factor in causing disease

First Known Use of COFACTOR

1885

Browse

Next Word in the Dictionary: Cofán
Previous Word in the Dictionary: coextensive
All Words Near: cofactor

Seen & Heard

What made you want to look up cofactor? Please tell us where you read or heard it (including the quote, if possible).