Etymology
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visual (adj.)
early 15c., "pertaining to the faculty of sight;" also "coming from the eye or sight" (as a beam of light was thought to do), from Late Latin visualis "of sight," from Latin visus "a sight, a looking; power of sight; things seen, appearance," from visus, past participle of videre "to see" (see vision). Meaning "perceptible by sight" is from late 15c; sense of "relating to vision" is first attested c. 1600. The noun meaning "photographic film or other visual display" is first recorded 1944.
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cell (n.)

early 12c., "small monastery, subordinate monastery" (from Medieval Latin in this sense), later "small room for a monk or a nun in a monastic establishment; a hermit's dwelling" (c. 1300), from Latin cella "small room, store room, hut," related to Latin celare "to hide, conceal," from PIE root *kel- (1) "to cover, conceal, save."

From "monastic room" the sense was extended to "prison room" (1722). The word was used in 14c., figuratively, of brain "compartments" as the abode of some faculty; it was used in biology by 17c. of various cavities (wood structure, segments of fruit, bee combs), gradually focusing to the modern sense of "basic structure of all living organisms" (which OED dates to 1845).

Electric battery sense is from 1828, based on the "compartments" in very early types. Meaning "small group of people working within a larger organization" is from 1925. Cell-body is from 1851, cell-division from 1846, cell-membrane from 1837 (but cellular membrane is 1732), cell wall from 1842.

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oocyte (n.)

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

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lymphocyte (n.)

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

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kil- 
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).
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nematocyst (n.)

"thread cell, lasso cell," such as the stinging organs of jellyfish, 1875, from nemato- + cyst. Related: Nematocystic.

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cellulitis (n.)

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

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cellulite (n.)

"lumpy, dimpled fat," 1968, from French cellulite, from cellule "a small cell" (16c., from Latin cellula "little cell," diminutive of cella; see cell) + -ite (see -ite (1)). The word appeared mainly in fashion magazines and advertisements for beauty treatments.

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