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schlieren

Upper-Intermediate (B2)

IPA: /ˈʃlɪərən/

KK: /ˈʃliːrən/

noun
Definition

Irregular streaks in certain types of rocks or regions in a transparent medium that appear due to differences in composition or density.


Example

The geologist pointed out the schlieren in the rock sample, noting their unique composition.


Conversation
Sloth A
Have you ever noticed those strange schlieren in the sky when it's really hot?
Sloth B
Yeah, they look like wavy lines, right?
Sloth A
Exactly! I learned that it's because of different air densities.
Sloth B
That’s so cool! I’ll look out for them next time.

Synonyms & Antonyms
Synonyms
streaks
veins
bands
Antonyms
uniformity
homogeneity
consistency
Root Explanation

Schlieren originates from the German word 'Schliere', meaning streak or smear. It refers to the optical phenomenon where variations in density in a transparent medium cause light to bend, creating visible streaks.

Memory Tip

Think of the German word 'Schliere' meaning streak or smear, which helps you remember that 'schlieren' refers to the streaks created by light bending through different densities.

Visually Confused Words
sclere
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