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Rigidity Definition & Meaning - Merriam-Webster
RIGIDITY | English meaning - Cambridge Dictionary
RIGIDITY | definition in the Cambridge English Dictionary
Rigidity - Definition, Meaning & Synonyms | Vocabulary.com
RIGIDITY Synonyms: 46 Similar and Opposite Words - Merriam-Webster
rigidity noun - Definition, pictures, pronunciation and usage notes ...
Rigidities - definition of rigidities by The Free Dictionary
RIGID Definition & Meaning | Dictionary.com
rigid adjective - Definition, pictures, pronunciation and usage …
RIGID | English meaning - Cambridge Dictionary