The origin or descent of something, such as a word .
The origin of a word.
breastplate of Zues
Aegis isn't a god, it's Zeus's or Athena's shield. Since a shield gives a sense of security, I would assume that's why.
The term for the medical condition 'leprosy' is derived from Greek by way of Latin. The word in Latin is the noun 'lepra'. The word was borrowed from the same word in Greek 'lepra'. The Greek noun in...