Reddish in color.
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ery·throid i-'rith-.rȯid, 'er-ə-.thrȯid adj relating to red blood cells or their precursors
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eryth·roid (ə-rithґroid) (erґĭ-throid″) 1. of a red color; reddish. 2. pertaining to any of the cells in the developmental series ending in erythrocytes; see erythrocytic series, under series.Medical dictionary. 2011.