momentous
Definition
Of great importance or significance.
हिन्दी बहुत महत्व या महत्वपूर्ण होना।
Example
"The discovery of penicillin was a momentous event in medical history."
Of great importance or significance.
हिन्दी बहुत महत्व या महत्वपूर्ण होना।
"The discovery of penicillin was a momentous event in medical history."