Definition of phacelia
1 capitalized : a genus of American herbs (family Hydrophyllaceae) with usually pinnatifid or dissected leaves and blue, purple, or white flowers in scorpioid cymes — see california bluebell
2 plural -s : any plant of the genus Phacelia
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Origin and Etymology of phacelia
New Latin, from Greek phakelos bundle, faggot + New Latin -ia
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