/ Dictionary / Index P physiological atmosphere: Meaning and Definition of Find definitions for: physiolog'ical at'mosphere Pronunciation: [key] ecosphere. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. physiological physiological phonetics Related Content Daily Word Quiz: opulent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language