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fifth dimension
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noun Mathematics, Physics.
a theoretical dimension beyond or in addition to a fourth dimension.
QUIZ
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Which of the following nouns has an irregular plural form?
Words nearby fifth dimension
Fifth Amendment, Fifth Avenue, fifth column, Fifth Commandment, fifth cranial nerve, fifth dimension, fifth disease, fifth estate, fifth force, fifth-generation, fifthly
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Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022