A hypothetical substance used in theoretical chemistry.

A fictional element in a science fiction narrative.

एक विज्ञान कथा में एक काल्पनिक तत्व।

English Usage: "In the sci-fi novel, epangline was the key to faster-than-light travel."

Hindi Usage: "विज्ञान कथा उपन्यास में, epangline faster-than-light यात्रा की कुंजी थी।"