palytoxin
[ păl′ə-tŏk′sĭn ]
Save This Word!
An extremely powerful toxin occurring in corals of the genus Palythoa of the South Pacific. Palytoxin disrupts the flow of ions across cell membranes and is the most potent known naturally occurring poison, being rapidly fatal to humans in doses of 4 micrograms. One of the most complex known nonprotein substances, it has more contiguous carbon atoms (115) than any other naturally occurring molecule. Chemical formula: C129H223N3O54.
QUIZ
CAN YOU ANSWER THESE COMMON GRAMMAR DEBATES?
There are grammar debates that never die; and the ones highlighted in the questions in this quiz are sure to rile everyone up once again. Do you know how to answer the questions that cause some of the greatest grammar debates?
Question 1 of 7
Which sentence is correct?
Words nearby palytoxin
Paludrine, pal up, palustrine, paly, palynology, palytoxin, pam, Pama-Nyungan, Pamela, Pamiri, Pamirs
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.