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balance: balance: [13] The underlying etymological meaning of balance is of a weighing apparatus with ‘two pans’ for holding things. In Latin this was a lībra bilanx, literally ‘scales with two pans’ – bilanx being compounded from bi- ‘two’ and lanx ‘plate, pan’. Bilanx passed, in its stem from bilanc-, via Vulgar Latin *bilancia into Old French balance, the source of the English word.
essay: essay: [15] Essay and assay [14] are fundamentally the same word, and only began to diverge in the 15th century. Both come via Old French assaier from Vulgar Latin *exagiāre ‘weigh out’, a verb derived from late Latin exagium ‘weighing’; this in turn was formed from the Latin verb exigere ‘weigh’ (source of English exact and examine).

Accordingly, both originally had underlying connotations of ‘testing by weighing’. But while these have become more concrete in assay ‘analyse precious metals’, essay has, under the influence of French essayer, gone down the more metaphorical route from ‘test’ to ‘try’. The verb now survives only in fairly formal use, but the noun is much more frequent, owing to its application to a ‘short nonfictional literary composition’.

It was first used thus in English by Francis Bacon in 1597 as the title of a collection of such pieces, and it is generally assumed that he borrowed the idea from the Essais of Montaigne, published in 1580.
=> assay, exact, examine
examine: examine: [14] Like essay and exact, examine comes ultimately from Latin exigere, a compound verb formed from the prefix ex- ‘out’ and agere ‘lead, drive’ (source of English act and agent). This originally meant literally ‘drive out’, but a metaphorical sense ‘weigh accurately’ developed which was carried over into a derived noun exāmen ‘weighing’. This in turn formed the basis of another derivative, the verb exāmināre ‘weigh’, hence ‘weigh up, ponder, consider, test, examine’. The abbreviation exam for examination dates from the late 19th century.
=> act, agent, essay, exact
axiom (n.): late 15c., from Middle French axiome, from Latin axioma, from Greek axioma "authority," literally "that which is thought worthy or fit," from axioun "to think worthy," from axios "worthy, worth, of like value, weighing as much," from PIE adjective *ag-ty-o- "weighty," from root *ag- "to drive, draw, move" (see act (n.)).
Axioms in philosophy are not axioms until they are proved upon our pulses. [Keats, letter, May 3, 1818]
balance (n.): early 13c., "apparatus for weighing," from Old French balance (12c.) "balance, scales for weighing," also in the figurative sense; from Medieval Latin bilancia, from Late Latin bilanx, from Latin (libra) bilanx "(scale) having two pans," possibly from Latin bis "twice" + lanx "dish, plate, scale of a balance." The accounting sense is from 1580s; the meaning "general harmony between parts" is from 1732; sense of "physical equipoise" is from 1660s. Balance of power in the geopolitical sense is from 1701. Many figurative uses (such as hang in the balance, late 14c.), are from Middle English image of the scales in the hands of personified Justice, Fortune, Fate, etc.
carat (n.): also karat, mid-15c., from Middle French carat "measure of the fineness of gold" (14c.), from Italian carato or Medieval Latin carratus, both from Arabic qirat "fruit of the carob tree," also "weight of 4 grains," from Greek keration "carob seed," also the name of a small weight of measure (one-third obol), literally "little horn" diminutive of keras "horn" (see kerato-).

Carob beans were a standard for weighing small quantities. As a measure of diamond weight, from 1570s in English. The Greek measure was the equivalent of the Roman siliqua, which was one-twentyfourth of a golden solidus of Constantine; hence karat took on a sense of "a proportion of one twentyfourth" and became a measure of gold purity (1550s). Eighteen carat gold is eighteen parts gold, six parts alloy. It is unlikely that the classical carat ever was a measure of weight for gold.
compensation (n.): late 14c., "action of compensating," from Latin compensationem (nominative compensatio) "a weighing one thing against another, a balancing," noun of action from past participle stem of compensare (see compensate). Meaning "what is given in recompense" is from c. 1600; meaning "amends for loss or damages" is from 1804; meaning "salary, wages" is attested from 1787, American English. The psychological sense is from 1914.
dispensary (n.): "place for weighing out medicines," 1690s, from Medieval Latin dispensarius "one who dispenses," from Latin dispensare (see dispense).
essay (n.): 1590s, "trial, attempt, endeavor," also "short, discursive literary composition" (first attested in writings of Francis Bacon, probably in imitation of Montaigne), from Middle French essai "trial, attempt, essay" (in Old French from 12c.), from Late Latin exagium "a weighing, a weight," from Latin exigere "drive out; require, exact; examine, try, test," from ex- "out" (see ex-) + agere (see act (n.)) apparently meaning here "to weigh." The suggestion is of unpolished writing. Compare assay, also examine.
examine (v.): c. 1300, from Old French examiner "interrogate, question, torture," from Latin examinare "to test or try; consider, ponder," literally "to weigh," from examen "a means of weighing or testing," probably ultimately from exigere "weigh accurately" (see exact (adj.)). Related: Examined; examining.
isostasy (n.): 1889, from iso- + Greek stasis "setting, weighing, standing" (see stasis). Related: Isostatic.
load (n.): "that which is laid upon a person or beast, burden," c. 1200, from Old English lad "way, course, carrying," from Proto-Germanic *laitho (cognates: Old High German leita, German leite, Old Norse leið "way, course"); related to Old English lædan "to guide," from PIE *leit- "to go forth" (see lead (v.)). Sense shifted 13c. to supplant words based on lade, to which it is not etymologically connected; original association with "guide" is preserved in lodestone. Meaning "amount customarily loaded at one time" is from c. 1300.

Figurative sense of "burden weighing on the mind, heart, or soul" is first attested 1590s. Meaning "amount of work" is from 1946. Colloquial loads "lots, heaps" is attested from c. 1600. Phrase take a load off (one's) feet "sit down, relax" is from 1914, American English. Get a load of "take a look at" is American English colloquial, attested from 1929.
oppression (n.): mid-14c., "cruel or unjust use of power or authority," from Old French opression (12c.), from Latin oppressionem (nominative oppressio) "a pressing down; violence, oppression," noun of action from past participle stem of opprimere (see oppress). Meaning "action of weighing on someone's mind or spirits" is from late 14c.
outweigh (v.): 1590s, from out (adv.) + weigh (v.). Related: Outweighed; outweighing.
scale (n.2): weighing instrument, early 15c.; earlier "pan of a balance" (late 14c.); earlier still "drinking cup" (c. 1200), from Old Norse skal "bowl, drinking cup," in plural, "weighing scale" from a noun derivative of Proto-Germanic *skæla "split, divide" (cognates: Old Norse skel "shell," Old English scealu, Old Saxon skala "a bowl (to drink from)," Old High German scala, German Schale "a bowl, dish, cup," Middle Dutch scale, Dutch schaal "drinking cup, bowl, shell, scale of a balance"), from PIE root *skel- (1) "to cut" (see scale (n.1)).

The connecting sense seems to be of half of a bivalve ("split") shell used as a drinking cup or a pan for weighing. But according to Paulus Diaconus the "drinking cup" sense originated from a supposed custom of making goblets from skulls (see skull). Related: Scales. This, as a name for the zodiac constellation Libra, is attested in English from 1630s.
static (adj.): 1630s, "pertaining to the science of weight and its mechanical effects," from Modern Latin statica, from Greek statikos "causing to stand, skilled in weighing," from stem of histanai "to make to stand, set; to place in the balance, weigh," from PIE root *sta- "to stand" (see stet). Earlier statical (1560s). The sense of "having to do with bodies at rest or with forces that balance each other" is first recorded 1802. Applied to frictional electricity from 1839.
tweed (n.): 1839, a trade name for a type of woolen fabric:
MICHAEL NOWAK, alias John Mazurkiewiez, was indicted for stealing on the 15th of April 2 ¼ yards of woollen cloth, called tweed, value 12s., and 2 ¼ yards of woollen cloth, called doe skin, value 17s., the goods of George Priestley Heap. [London Central Criminal Court minutes of evidence from 1839]
This apparently developed from the "Tweed Fishing or Travelling Trousers" advertised in numerous publications from 1834-1838 by the clothing house of Doudney & Son, 49 Lombard Street.
So celebrated has amateur rod-fishing in the Tweed become, that the proper costume of the sportsman has now become an object of speculation among the London tailors, one of whom advertises among other articles of dress "Tweed Fishing Trousers." The anglers who have so long established their head-quarters at Kelso, for the purpose of enjoying the amusement of salmon fishing in the Tweed, have had excellent sport lately : some of the most skilful having caught five or six salmon a day, weighing from six to fourteen pounds each. ["New Sporting Magazine," June 1837]
Thus ultimately named for the River Tweed in Scotland. The place name has not been explained, and it is perhaps pre-Celtic and non-Indo-European.
weight (n.): Old English gewiht "weighing, weight, downward force of a body, heaviness," from Proto-Germanic *wihti- (cognates: Old Norse vætt, Danish vegt, Old Frisian wicht, Middle Dutch gewicht, German Gewicht), from *weg- (see weigh).

Figurative sense of "burden" is late 14c. To lose weight "get thinner" is recorded from 1961. Weight Watcher as a trademark name dates from 1960. To pull one's weight (1921) is from rowing. To throw (one's) weight around figuratively is by 1922. Weight-training is from 1945. Weight-lifting is from 1885; weight-lifter (human) from 1893.
quingenary: "= quincentenary rare", Early 20th cent.; earliest use found in The Times. From classical Latin quīngēnārius consisting of five hundred men, weighing five hundred pounds from quīngēnī five hundred each + -ārius.
examinant: "A person conducting a judicial or academic examination", Early 17th century: from Latin examinant- 'weighing, testing', from the verb examinare (see examine).