Synonyms and Antonyms of d region
synonym (synonym of d region)
- (noun.location)the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves (noun.location)
instance hypernym (d region IS A KIND OF .... relation (represent specific [usually real-world] instances of something))
part meronym (HAS PART relation)
- (noun.location)the outer region of the Earth's atmosphere; contains a high concentration of free electrons (noun.location)
