location - a point or extent in space

atmosphere, air - the mass of air surrounding the Earth; "there was great heat as the comet entered the atmosphere"; "it was exposed to the air"

biosphere - the regions of the surface and atmosphere of the Earth (or other planet) where living organisms exist

depth - (usually plural) the deepest and most remote part; "from the depths of darkest Africa"; "signals received from the depths of space"

interplanetary space - the part of outer space within the solar system

interstellar space - the space between stars

heliosphere - the region inside the heliopause containing the sun and solar system

intergalactic space - the space between galaxies; "the Milky Way travels through intergalactic space"

deep space - any region in space outside the solar system

aerospace - the atmosphere and outer space considered as a whole

zone - an area or region distinguished from adjacent parts by a distinctive feature or characteristic

belt - an elongated region where a specific condition is found; "a belt of high pressure"

bottom - the lowest part of anything; "they started at the bottom of the hill"

county - a region created by territorial division for the purpose of local government; "the county has a population of 12,345 people"

distance - a distant region; "I could see it in the distance"

eden, heaven, paradise, Shangri-la, promised land, nirvana - any place of complete bliss and delight and peace

extremity - the outermost or farthest region or point

D region, D-layer - the lowest region of the ionosphere (35 to 50 miles up) that reflects low-frequency radio waves

Appleton layer, F layer, F region - the highest region of the ionosphere (from 90 to 600 miles up) that contains the highest concentration of free electrons and is most useful for long-range radio transmission

E layer, E region, Heaviside layer, Kennelly-Heaviside layer - a region of the ionosphere (from 50 to 90 miles up) that reflects radio waves of medium length

hell, hell on earth, hellhole, inferno, snake pit, the pits - any place of pain and turmoil; "the hell of battle"; "the inferno of the engine room"; "when you're alone Christmas is the pits";

inside, interior - the region that is inside of something

ionosphere - the outer region of the Earth's atmosphere; contains a high concentration of free electrons

layer - a relatively thin sheetlike expanse or region lying over or under another

exterior, outside - the region that is outside of something

radius - a circular region whose area is indicated by the length of its radius; "they located it within a radius of 2 miles"

side - a place within a region identified relative to a center or reference location; "they always sat on the right side of the church"; "he never left my side"

air - the region above the ground; "her hand stopped in mid air"; "he threw the ball into the air"

vacuity, vacuum - a region empty of matter

top - the upper part of anything; "the mower cuts off the tops of the grass"; "the title should be written at the top of the first page"

zodiac - a belt-shaped region in the heavens on either side to the ecliptic; divided into 12 constellations or signs for astrological purposes

mansion, planetary house, sign of the zodiac, star sign, sign, house - (astrology) one of 12 equal areas into which the zodiac is divided

Witwatersrand, Reef, Rand - a rocky region in the southern Transvaal in northeastern South Africa; contains rich gold deposits and coal and manganese

black hole - a region of space resulting from the collapse of a star; extremely high gravitational field

maria, mare - a dark region of considerable extent on the surface of the moon

body part - any part of an organism such as an organ or extremity

erogenous zone - any area of the body especially sensitive to sexual stimulation

hypochondrium - the upper region of the abdomen just below the lowest ribs on either side of the epigastrium

area of cardiac dullness - a triangular area of the front of the chest (determined by percussion); corresponds to the part of the heart not covered by the lungs

epigastrium - the region lying on or over the stomach (just below the sternum)

fovea, fovea centralis - area consisting of a small depression in the retina containing cones and where vision is most acute

parafovea - area of the retina immediately surrounding the fovea

macula lutea, macular area, yellow spot, macula - a yellowish central area of the retina that is rich in cones and that mediates clear detailed vision

cortical area, cortical region - any of various regions of the cerebral cortex

perineum - the general region between the anus and the genital organs

side - either the left or right half of a body; "he had a pain in his side"

cleavage - the line formed by a groove between two parts (especially the separation between a woman's breasts)

ring of color, areola - small circular area such as that around the human nipple or an inflamed area around a pimple or insect bite

midriff, midsection, middle - the middle area of the human torso (usually in front); "young American women believe that a bare midriff is fashionable"

waist, waistline - the narrowing of the body between the ribs and hips

loins, pubes, pubic region - the lower part of the abdomen just above the external genital organs

palm, thenar - the inner surface of the hand from the wrist to the base of the fingers

thenar - the fleshy area of the palm at the base of the thumb

sole - the underside of the foot

half-moon, lunula, lunule - the crescent-shaped area at the base of the human fingernail

groin, inguen - the crease at the junction of the inner part of the thigh with the trunk together with the adjacent region and often including the external genitals

quick - any area of the body that is highly sensitive to pain (as the flesh underneath the skin or a fingernail or toenail)

location - a point or extent in space

area, country - a particular geographical region of indefinite boundary (usually serving some special purpose or distinguished by its people or culture or geography); "it was a mountainous area"; "Bible country"

backwater - any backward region that is isolated from the world and resists progress

breadbasket - a geographic region serving as the principal source of grain

theater of war, theatre of war - the entire land, sea, and air area that may become or is directly involved in war operations

field of operations, theater of operations, theatre of operations, theatre, theater, field - a region in which active military operations are in progress; "the army was in the field awaiting action"; "he served in the Vietnam theater for three years"

zone of interior - the part of the theater of war not included in the theater of operations

district, territorial dominion, territory, dominion - a region marked off for administrative or other purposes

demesne, domain, land - territory over which rule or control is exercised; "his domain extended into Europe"; "he made it the law of the land"

Old World - the regions of the world that were known to Europeans before the discovery of the Americas

Far East - a popular expression for the countries of eastern Asia (usually including China and Mongolia and Taiwan and Japan and Korea and Indochina and eastern Siberia)

northland, septentrion, North - any region lying in or toward the north

southland, South - any region lying in or toward the south

field - somewhere (away from a studio or office or library or laboratory) where practical work is done or data is collected; "anthropologists do much of their work in the field"

geographic area, geographic region, geographical area, geographical region - a demarcated area of the Earth

biogeographical region - an area of the Earth determined by distribution of flora and fauna

heartland - the central region of a country or continent; especially a region that is important to a country or to a culture

irredenta, irridenta - a region that is related ethnically or historically to one country but is controlled politically by another

antipodes - any two places or regions on diametrically opposite sides of the Earth; "the North Pole and the South Pole are antipodes"

terra incognita, unknown, unknown region - an unknown and unexplored region; "they came like angels out the unknown"

testing ground, laboratory - a region resembling a laboratory inasmuch as it offers opportunities for observation and practice and experimentation; "the new nation is a testing ground for socioeconomic theories"; "Pakistan is a laboratory for studying the use of American troops to combat terrorism"

Occident, West - the countries of (originally) Europe and (now including) North and South America

indefinite quantity - an estimated quantity

knowledge base, knowledge domain - the content of a particular domain or field of knowledge