adv. phr. 1. In one's natural surroundings. The deep-sea fish is in his element in deep ocean water. 2. Where you can do your best. John is in his element working on the farm.
Compare: AT HOME 2.
Antonym: OUT OF ONE'S ELEMENT.
IN ONE'S ELEMENT
Meaning of IN ONE'S ELEMENT in English
American idioms English vocabulary. Английский словарь американских идиом. 2012