/ Dictionary / Index N noosphere: Meaning and Definition of Find definitions for: no•o•sphere Pronunciation: (nō'u-sfēr"), [key] — n. Ecol. the biosphere including and modified by such human activities as agriculture, forestry, animal husbandry, urbanization, and industrialization. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. noose Nootka Related Content Daily Word Quiz: frugal Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language