Dictionary
Find
in
Dictionary
Thesaurus
Translations

Click to move up the list of words
quotidian
quotient
Qur’an
qv
qwerty
qy
R (1)
R (2)
R (3)
R (4)
R (5)
r (1)
r (2)
r (3)
R.A.
r.a.m.
R and R
Click to move down the list of words
Print Preview
See pronunciation key
Search for "R factor" in all of MSN Encarta
E-mail this entry
Download the MSN Encarta Right-Click Dictionary

R factor

R factor (plural R factors)


noun 
Definition:
 
cause of resistance to antibiotics: a combination of genes that makes some bacteria resistant to antibiotics. It can be transferred to other bacteria through conjugation.

[< abbreviation of resistance]
Advertisement

Also on Encarta
Also on MSN
Encarta Message Boards (© Rubberball/Jupiterimages)
Encarta RSS Feeds
© 2008 Microsoft