Submitted by admin on Thu, 04/10/2014 - 09:42
definition:
(With reference to motion, light, sound, etc.) transmit or be transmitted in a particular direction or through a medium
sentence:
As light is propagated through a biological medium, components of that light are either propagated forward in the medium, absorbed by molecules, or scattered in all directions within the medium.
difficulty:
medium
toefl frequency:
2
toefl classification: