英语词源字典 - 在线词源网站

Algol [Algol 词源字典]: Beta Persei, variable star in the constellation Perseus, late 14c., literally "the Demon," from Arabic al-ghul "the demon" (see ghoul). It corresponds, in modern representations of the constellation, to the gorgon's head Perseus is holding, but it probably was so called because it visibly varies in brightness every three days, which sets it apart from other bright stars. The computer language (1959) is a contraction of algo(rithmic) l(anguage); see algorithm.[Algol etymology, Algol origin, 英语词源]
apparently (adv.): late 14c., "visibly, openly," from apparent + -ly (2). Meaning "evidently" is from 1550s; that of "to all appearances" (but not necessarily "really") is from 1560s; meaning "so far as can be judged, seemingly," is from 1846. A gradual retreat from certainty.
great (adj.): Old English great "big, tall, thick, stout, massive; coarse," from West Germanic *grautaz "coarse, thick" (cognates: Old Saxon grot, Old Frisian grat, Dutch groot, German groß "great"). If the original sense was "coarse," it is perhaps from PIE root *ghreu- "to rub, grind," but "the connextion is not free from difficulty" [OED]. It took over much of the sense of Middle English mickle, and itself now is largely superseded by big and large except in reference to non-material things.

In the sense of "excellent, wonderful" great is attested from 1848. Great White Way "Broadway in New York City" is from 1901, in reference to brilliant street illumination. The Great Lakes of North America so called from 1747. Great Spirit "high deity of the North American Indians," 1703, originally translates Ojibwa kitchi manitou. The Great War originally (1887) referred to the Napoleonic Wars, later (1914) to what we now call World War I (see world).
"The Great War" -- as, until the fall of France, the British continued to call the First World War in order to avoid admitting to themselves that they were now again engaged in a war of the same magnitude. [Arnold Toynbee, "Experiences," 1969]
Also formerly with a verb form, Old English greatian "to become enlarged," Middle English greaten "to become larger, increase, grow; become visibly pregnant," which became archaic after 17c.
individually (adv.): 1590s, "indivisibly," from individual + -ly (2). Meaning "as individuals" is from 1640s.
invisible (adj.): mid-14c., from Old French invisible (13c.), from Latin invisibilis "unseen, invisible," from in- "not" (see in- (1)) + visibilis (see visible). As a noun, "things invisible," from 1640s. Invisible Man is from H.G. Wells's novel (1897). Related: Invisibly.
Lazarus: Biblical character (Luke xvi:20), the poor man covered in sores; his name was extended in medieval usage to "any poor and visibly diseased person" (compare lazar, mid-14c., "one deformed and nauseous with filthy and pestilential diseases" [Johnson]). The name is from a Greek rendition of Hebrew El'azar, literally "God has helped."
unsightly (adj.): 1540s, "displeasing to the eye," from un- (1) "not" + sight (n.) + -ly (1). Similar formation in Middle Dutch onsichtlijc "invisible; ugly," Middle High German unsihtlih "invisible." Related: Unsightliness.

Middle English sightlie is attested from mid-15c. but only in the sense "visible;" unsightly is attested in Middle English only as an adverb meaning "invisibly" (late 15c.). Sightly as "pleasing to the eye" is from 1560s. Middle English also had unsighty "difficult or displeasing to look at" (early 15c., from sighty "attractive," late 14c.), also unsightily in the same sense (c. 1400).
visible (adj.): mid-14c., from Old French visable, visible "perceptible" (12c.) and directly from Latin visibilis "that may be seen," from visus, past participle of videre "to see" (see vision). An Old English word for this was eagsyne. Related: Visibly.