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gradually (adv.)[gradually 词源字典]: 1640s, from gradual + -ly (2).[gradually etymology, gradually origin, 英语词源]
graduand (n.): in British universities, a student who has passed the necessary examinations but not yet graduated, 1882, from Medieval Latin graduandus, gerundive of graduari "to have a degree" (see graduate (n.)).
graduate (n.): early 15c., "one who holds a degree" (originally with man; as a stand-alone noun from mid-15c.), from Medieval Latin graduatus, past participle of graduari "to take a degree," from Latin gradus "step, grade" (see grade (n.)). As an adjective, from late 15c.
graduate (v.): early 15c., "to confer a university degree upon," from Medieval Latin graduatus (see graduate (n.)). Intransitive sense from 1807. Related: Graduated; graduating.
graduation (n.): early 15c., in alchemy, "a tempering, a refining of something to a certain degree; measurement according to the four degrees of a quality," from graduate (n.). General sense of "a dividing into degrees" is from 1590s; meaning "action of receiving or giving an academic degree" is from early 15c.; in reference to the ceremony where a degree is given, from 1818.
Gradus ad Parnassum (n.): Latin, literally "A Step to Parnassus," the mountain sacred to Apollo and the Muses. It was the title of a dictionary of prosody used in English public schools for centuries as a guide to Roman poetry. The book dates from the 1680s. Also the name of a treatise on musical composition written in Latin by Johann Joseph Fux, published in Vienna in 1725, and of a much-used book of exercises for piano.
Grady: surname and masc. proper name, from Irish Grada "noble."
Graeco-: also Greco-, modern word-forming element, from Latin Graecus "Greek" (see Greek (n.)) on model of Anglo-, Franco-, etc.
graffiti (n.): 1851, "ancient wall inscriptions found in the ruins of Pompeii," from Italian graffiti, plural of graffito "a scribbling," a diminutive formation from graffio "a scratch or scribble," from graffiare "to scribble," ultimately from Greek graphein "to scratch, draw, write" (see -graphy). They are found in many ancient places, but the habit was especially popular among the Romans. Sense extended 1877 to recently made crude drawings and scribbling in public places.
graffito (n.): singular of graffiti (q.v.).
graft (n.1): "shoot inserted into another plant," late 15c. alteration of Middle English graff (late 14c.), from Old French graife "grafting knife, carving tool; stylus, pen," from Latin graphium "stylus," from Greek grapheion "stylus," from graphein "to write" (see -graphy). So called probably on resemblance of a stylus to the pencil-shaped shoots used in grafting. The terminal -t- in the English word is not explained. Surgical sense is from 1871.
graft (n.2): "corruption," 1865, perhaps 1859, American English, perhaps from British slang graft "one's occupation" (1853), which is perhaps from the identical word meaning "a ditch, moat," literally "a digging" (1640s), from Middle Dutch graft, from graven "to dig" (see grave (v.)).
graft (v.): late 15c., "insert a shoot from one tree into another," from graft (n.1). Figurative use by 1530s. Surgical sense by 1868. Related: Grafted; grafting.
Graham: family name attested from early 12c., an Anglo-French form of the place name Grantham (Lincolnshire). In reference to crackers, bread, etc., made from unsifted whole-wheat flour, 1834, American English, from Sylvester Graham (1794-1851), U.S. dietetic reformer and temperance advocate. Related: Grahamism. Graham's law in physics (1845) is a reference to Scottish chemist Thomas Graham (1805-1869). Graham Land in Antarctica was named 1832 by English explorer John Biscoe in honor of Sir James Graham (1792-1861), first lord of the Admiralty; the U.S. name for it was Palmer Peninsula in honor of American explorer Nathaniel Palmer, who had led an expedition there in 1820. The rival names persisted until 1964.
grail (n.): c. 1300, gral, "the Holy Grail," from Old French graal, greal "Holy Grail; cup," earlier "large shallow dish, basin," from Medieval Latin gradalis, also gradale, grasale, "a flat dish or shallow vessel." The original form is uncertain; the word is perhaps ultimately from Latin crater "bowl," which is from Greek krater "bowl, especially for mixing wine with water" (see crater (n.)).

Holy Grail is anglicized from Middle English seint gral (c. 1300), also sangreal, sank-real (c. 1400), which seems to show deformation as if from sang real "royal blood" (that is, the blood of Christ) The object had been inserted into the Celtic Arthurian legends by 12c., perhaps in place of some pagan otherworldly object. It was said to be the cup into which Joseph of Arimathea received the last drops of blood of Christ (according to the writers who picked up the thread of Chrétien de Troyes' "Perceval") or the dish from which Christ ate the Last Supper (Robert de Boron), and ultimately was identified as both ("þe dische wiþ þe blode," "Joseph of Aramathie," c. 1350?).
grain (n.): early 14c., "a small, hard seed," especially of one of the cereal plants, also as a collective singular, "seed of wheat and allied grasses used as food;" also "something resembling grain; a hard particle of other substances" (salt, sand, later gunpowder, etc.), from Old French grain, grein (12c.) "seed, grain; particle, drop; berry; grain as a unit of weight," from Latin granum "seed, a grain, small kernel," from PIE root *gre-no- "grain" (see corn (n.1)). From late 14c. as "a species of cereal plant." In the U.S., where corn has a specialized sense, it is the general word (used of wheat, rye, oats, barley, etc.).

Figuratively, "the smallest possible quantity," from late 14c. From early 15c. in English as the smallest unit of weight (originally the weight of a plump, dry grain of wheat or barley from the middle of the ear). From late 14c as "roughness of surface; a roughness as of grains." In reference to wood, "quality due to the character or arrangement of its fibers," 1560s; hence, against the grain (1650), a metaphor from carpentry: cutting across the fibers of the wood is more difficult than cutting along them.

Earliest sense of the word in English was "scarlet dye made from insects" (early 13c.), a sense also in the Old French collateral form graine; see kermes for the evolution of this sense, which was frequent in Middle English; also compare engrain. In Middle English grain also could mean "seed of flowers; pip of an apple, grape, etc.; a berry, legume, nut." Grain alcohol attested by 1854.
grained: in compounds, "having grains" (of a specified kind), 1520s; see grain (n.).
grainy (adj.): 1610s, "full of grains," from grain + -y (2). Photographic sense is from 1900. In Middle English, grain also was used as an adjective, "like grain, lumpy, spotted" (early 15c.). Related: Graininess.
grallatorial (adj.): "of or pertaining to wading birds," 1825, from Latin grallotores "stilt-walkers," plural of grallator "one who walks on stilts," from grallae "stilts," ultimately from stem of gradi "to walk, go" (see grade (n.)). Grallatores was formerly used as the name of an order of birds comprising herons, cranes, etc. Related: Grallatory (1835).
gram (n.): also gramme, metric unit of weight, 1797, from French gramme (18c.), from Late Latin gramma "small weight," from Greek gramma "small weight," a special use of the classical word meaning "a letter of the alphabet" (see -gram). Adopted into English about two years before it was established in France as a unit in the metric system by law of 19 frimaire, year VIII (1799). "There seems to be no possible objection to adopting the more convenient shorter form, except that the -me records the unimportant fact that the word came to us through French" [Fowler].