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hypotonic

Upper-Intermediate (B2)

IPA: /ˌhaɪpəˈtɒnɪk/

KK: /haɪpəˈtɒnɪk/

adjective
Definition

Describing a solution that has a lower concentration of solutes compared to another solution, often leading to a lower osmotic pressure.


Example

The hypotonic solution caused the cells to swell as water moved in.


Conversation
Sloth A
I learned that a solution can be hypotonic compared to another one.
Sloth B
Oh really? What does that mean exactly?
Sloth A
It means it has lower osmotic pressure, which can affect cells.
Sloth B
That makes sense! It's interesting how science explains things like that.

Synonyms & Antonyms
Synonyms
low
soft
weak
Antonyms
hypertonic
tense
strong
Root Explanation

Hypotonic is formed from "hypo-" (meaning under or below) and "tonic" (from Greek "tonikos", meaning tension or tone). The word describes a solution that has a lower concentration of solutes compared to another solution, thus having less tension or tone in terms of osmotic pressure.

Memory Tip

Think of 'hypo-' meaning 'under' or 'below' and 'tonic' relating to 'tension' — this helps you remember that hypotonic refers to a solution with less tension or concentration.

Visually Confused Words
hypertonic
protonic
phytonic
myotonic
hypnotic
vasohypotonic
hyperisotonic
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