Share this entry

Share this page

picrotoxin

Syllabification: pic·ro·tox·in
Pronunciation: /ˌpikrōˈtäksən
 
/

Definition of picrotoxin in English:

noun

Medicine
A bitter compound used to stimulate the respiratory and nervous systems, especially in treating barbiturate poisoning.
Example sentences
  • When the synapses of these inhibitory neurons are blocked by drugs (such as of picrotoxin or penicillin), the excitatory network can sustain a chain reaction leading to an epileptiform discharge.
  • The only synaptic feedback to the pyloric pacemaker group through the EP to PD inhibitory synapse was removed by applying 10-5 M picrotoxin in the bath.
  • Picrotoxin eliminates frequency selectivity of an auditory interneuron in a bushcricket.

Origin

mid 19th century: from Greek pikros 'bitter' + toxin.

Definition of picrotoxin in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

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

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day jaunt
Pronunciation: dʒɔːnt
noun
a short excursion or journey made for pleasure