You know what it looks like… but what is it called?
TAKE THE QUIZ“ziegler”
We have one entry that includes the term ziegler.
Ziegler catalyst
noun: a catalyst (as triethyl-aluminum or a complex of a trialkyl-aluminum with titanium tetrachloride) that promotes an ionic type of polymerization of ethylene, propylene, or related olefins at atmospheric pressure with the resultant formation of a relatively high-melting polyethylene, a stereoregular polypropylene, or similar product
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- Before we went to her house, Hannah told us her aunt was a flibbertigibbet.


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Merriam-Webster unabridged