/ Dictionary / Index B B.S.Orn.Hort.: Meaning and Definition of Find definitions for: B.S.Orn.Hort. Pronunciation: [key] Bachelor of Science in Ornamental Horticulture. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. BSO B.S.O.T. Related Content Daily Word Quiz: winsome Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language