atmosphere

I

(New American Roget's College Thesaurus)

n. air, sky, ether, ozone; exosphere; mood, aura, ambience, environment.

II

(Roget's IV) n.

1. [The air]

Syn. layer of air, gaseous envelope, air pressure; see air 1 .

2. [A pervading quality]

Syn. environment, ambience, climate, mood; see character 1 , characteristic .

III

(Roget's 3 Superthesaurus) n.

1. ambience aura, surroundings, air, *vibes, feeling, environment.

2. sky air, heavens, smog, biosphere.

WORD FIND

• ion-rich layer, reflects radio waves, in thermosphere: ionosphere layer of oxygen in stratosphere, protects

• earth from ultraviolet radiation: ozone layer

• rising column of warm air: thermal

• stratum from 0-10 miles up: troposphere

• stratum from 10-30 miles up: stratosphere

• stratum from 30-50 miles up: mesosphere

• stratum from 50-300 miles up: thermosphere

• stratum from 300 miles to space: exosphere

• trapping of solar radiation and heat by carbon dioxide buildup: greenhouse effect

see air, rain, snow, weather, wind

IV

(Roget's Thesaurus II) noun 1. The gaseous mixture enveloping the earth: air. See HIGH, PLACE. 2. A general impression produced by a predominant quality or characteristic: air, ambiance, aura, feel, feeling, mood, smell, tone. See BE. 3. The totality of surrounding conditions and circumstances affecting growth or development: ambiance, climate, environment, medium, milieu, mise en scene, surroundings, world. See BE, LIMITED, PLACE. 4. A distinctive yet intangible quality deemed typical of a given thing: aroma, flavor, savor, smack2. See TASTE.