prometheus
— Noun
– English
～ (Greek mythology) the Titan who stole fire from Olympus and gave it to mankind; Zeus punished him by chaining him to a rock where an eagle gnawed at his liver until Hercules rescued him
promethium
— Noun
– English
～ a soft silvery metallic element of the rare earth group having no stable isotope; was discovered in radioactive form as a fission product of uranium