ADJ

functioning to qualify or modify a noun (Grammar)

In grammar, an adjective is a word whose main syntactic role is to modify a noun or pronoun (called the adjective's subject), giving more information about what the noun or pronoun refers to. Collectively, adjectives form one of the traditional eight parts of speech, though linguists today distinguish adjectives from words such as determiners that used to be considered adjectives but that are now recognized to be different.
See more at Wikipedia.org...

Marka Airport is a one-terminal airport situated in East Amman, Jordan. It was the home hub of Royal Jordanian Airlines, the national flag carrier, until  Queen Alia International Airport was opened in 1983. It mainly serves now as a regional airport servicing domestic and nearby international routes. It is home to airlines such as Royal Wings, Jordan Aviation, and Arab Wings. Marka Airport is operational 24 hours a day.
See more at Wikipedia.org...

enc, enclosed

adjective, part of speech used to modify a noun

Airport Name: Marka International Airport
Airport Location: Amman, Jordan
IATA Code: ADJ
ICAO Code: OJAM