Refers to something that cannot be reversed or inverted, often used in mathematical contexts.

गैर-उलटने योग्य

English Usage: The function is non-invertible, meaning it does not have an inverse.

Hindi Usage: यह फ़ंक्शन गैर-उलटने योग्य है, अर्थात इसका एक विपरीत नहीं है।