Englishfor English speakers
c
Noun
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C is the third letter of the alphabet.
"b" comes before "c"
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In some schools, an C is the passing grade.
Albert only just passed the exam; he got a C.
invariance
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noun
the nature of a quantity or property or function that remains unchanged when a given transformation is applied to it
the invariance of the configuration under translation
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noun
(= invariability)
the quality of being resistant to variation