| rational number | n nombor nisbah. | Kamus Inggeris-Melayu Dewan |
| irrational | adj 1. (of person, behaviour) lacking or not showing usual powers of reason, coherence, tdk rasional: he behaved in an ~ manner after taking the drug, dia berkelakuan tdk rasional selepas memakan ubat itu; her delirium caused her to become ~, keadaan delirium menyebabkan dia menjadi tdk rasional; 2. not in accordance with reason, illogical, tdk /rasional, munasabah, masuk akal/: an ~ statement, kenyataan yg tdk rasional; such fears are quite ~, perasaan takut begitu agak tdk munasabah; 3. (math) tak nisbah: ~ numbers, nombor tak nisbah. | Kamus Inggeris-Melayu Dewan |