dans le dictionnaire PONS
ir·ra·tion·al [ɪˈræʃənəl] ADJ
1. irrational action, behaviour:
2. irrational (illogical):
- irrational arguments, reasons
- irrational
- irrational arguments, reasons
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3. irrational ZOOL (of lower animals):
- irrational
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- irrational
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ir·ra·tion·al ˈnum·ber SUBST MATH
- irrational number
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