|1.||[ noun ] a particular environment or walk of life|
|Synonyms:||area field sphere arena orbit|
"his social sphere is limited" "it was a closed area of employment" "he's out of my orbit"
|Related terms:||environment front kingdom province political_arena preserve lap distaff|
|2.||[ noun ] (geography) territory over which rule or control is exercised|
"his domain extended into Europe" "he made it the law of the land"
|Related terms:||region empire kingdom duchy earldom archduchy grand_duchy viscounty Kingdom_of_God principality sheikdom emirate suzerainty barony fiefdom khnate country|
|3.||[ noun ] (mathematics) the set of values of the independent variable for which a function is defined|
|Related terms:||range set|
|4.||[ noun ] (sociology) people in general; especially a distinctive group of people with some shared interest|
"the Western world"
|Related terms:||class Grub_Street academia|
|5.||[ noun ] a knowledge domain that you are interested in or are communicating about|
"it was a limited domain of discourse" "here we enter the region of opinion" "the realm of the occult"