osmotic pressure
Pronunciation
Noun
B2 Upper-intermediate
Quick answer
The pressure needed to stop water from moving across a membrane from a less concentrated solution into a more concentrated one.
Test yourself
Which word fits the gap? "_____ is why a wilted plant stem stiffens back up after being placed in water."
Answer: osmotic pressure
In your own words, what does "osmotic pressure" mean?
The pressure needed to stop water from moving across a membrane from a less concentrated solution into a more concentrated one.
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