Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

cofactor

play
noun co·fac·tor \ˈkō-ˌfak-tər\

Definition of cofactor

  1. 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. 2 :  a substance that acts with another substance to bring about certain effects; especially :  coenzyme

  3. 3 :  something (as diet or a virus) that acts with or aids another factor in causing disease



1885

First Known Use of cofactor

1885


Medical Dictionary

cofactor

play
noun co·fac·tor \ˈkō-ˌfak-tər\

Medical Definition of cofactor

  1. 1:  a substance that acts with another substance to bring about certain effects; especially :  coenzyme

  2. 2:  something (as a diet or virus) that acts with or aids another factor in causing disease




Learn More about cofactor


Seen and Heard

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

WORD OF THE DAY

February 13, 2016

a trying or distressing experience

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image33683556

How much does a batman (the Turkish unit of measurement) weigh?

196.5 pounds 16.96 pounds 100 pounds 2.2 pounds
Name That Thing

10 quick questions: hear them, spell them, and see how your skills compare to the crowd.

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ