/ Dictionary / Index B blood relation: Meaning and Definition of Find definitions for: blood' rela'tion Pronunciation: [key] one related by birth. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. blood-red bloodroot Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language