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Pronunciation varies by accent · noun
(chemistry, in combination) Eleven potassium atoms or ions in a compound (K₁₁)..
Use undecapotassium when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Undecapotassium means (chemistry, in combination) Eleven potassium atoms or ions in a compound (K₁₁)..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
Use undecapotassium where its definition matches the intended context.
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