also bloodstream, "the blood circulating through the body," 1847, from blood (n.) + stream (n.).

"blood-colored," also "red with blood," Old English blodread; see blood (n.) + red (adj.1). Compare Dutch bloedrood, German blutroth, Old Norse bloðrauðr.

also bloodstained, "stained with blood; guilty of slaughter," 1590s, from blood (n.) + past participle of stain (v.).

also leucocyte, "white blood cell, white or colorless corpuscle of the blood or lymph," 1860, via French leucocyte, from leuco-, a Latinized combining form of Greek leukos "white, clear," from PIE root *leuk- "light, brightness" + -cyte "cell."

"type of large white blood cell with the power to devour foreign debris in the body or other cells or organisms," 1890, from macro- "large" + -phage "eater."

"white blood cell," regarded as an organism capable of devouring what it meets, 1884, from German phagocyten (plural), coined in German in 1884 by Dr. Elias Metchnikoff (1845-1916) from Greek phago- "eating, devouring" (from PIE root *bhag- "to share out, apportion; to get a share") + -cyte "cell." Related: Phagocytic.

"an egg mother-cell," 1895, from oo- "egg" + -cyte "cell."

cell found in the lymph, 1890, from lympho- "lymph" (see lymph) + -cyte "a cell."

first element in many Celtic place names, meaning "cell (of a hermit); church; burial place," from Gaelic and Irish -cil, from cill, gradational variant of ceall "cell, church, burial place," from Latin cella (see cell).

"inflammation of the cellular tissue," 1832, from Latin cellula, diminutive of cella "cell" (see cell) + -itis "inflammation."