Share this entry
permethrin Line breaks: per|meth¦rin
Pronunciation: /pəˈmiːθrɪn/

Definition of permethrin in English:


[mass noun]
A synthetic insecticide of the pyrethroid class, used chiefly against disease-carrying insects.
Example sentences
  • Pyrethrins and permethrin have a similar mode of activity.
  • Common treatments for head lice include permethrin and lindane.
  • Spray your clothing with permethrin insecticide spray.


1970s: from per- (sense 2) + (res)methrin, denoting a synthetic pyrethroid.

Definition of permethrin in:
Share this entry

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Subscribe to remove adverts and access premium resources