Origin and history of Ra

In Old French (and Italian), re- often appeared as ra- by confusion with the true ra- (from Latin re- + ad-), and the following...But as ra- was not recognized in English as a prefix, words with ra- in Old French usually returned to re- in English; Rally...

Old Norse fioþr, Swedish fjäder, Middle Dutch vedere, Dutch veder, Old High German fedara, German Feder), from PIE *pet-ra...

Old English "building material, trees suitable for building," and "trees or woods in general," from Proto-Germanic *tem(b)ra...

re, -an, as well as "mutation-genitives" (boc "book," plural bec), and the -es form never was used in plural (where -a, -ra...

"with reference to," used from c. 1700 in legalese, from Latin (in) re "in the matter of," from ablative of res "property, goods; matter, thing, affair," from Proto-Italic *re-, from PIE *reh-i- "wealth, goods" (source also of Sanskrit rayi- "property, goods," Avestan raii-i- "we

an undecomposable elementary substance having certain recognizable qualities (opacity, conductivity, plasticity, high specific gravity, etc.), mid-13c., from Old French metal "metal; material, substance, stuff" (12c.), from Latin metallum "metal, mineral; mine, quarry," from Gree

"pertaining to atoms," 1670s as a philosophical term (see atomistic); scientific sense dates from 1811, from atom + -ic. Atomic number is attested from 1821; atomic mass is from 1848. Atomic energy is recorded by 1906 in the modern sense (as intra-atomic energy from 1903). March

c. 1300, "sum, aggregate of a collection," from Anglo-French noumbre, Old French nombre and directly from Latin numerus "a number, quantity," from PIE root *nem- "assign, allot; take." The meaning "written symbol or figure of arithmetic value" is from late 14c. The meaning "singl

[correct, morally correct, direct] Old English riht, of actions, "just, good, fair, in conformity with moral law; proper, fitting, according to standard; rightful, legitimate, lawful; correct in belief, orthodox;" of persons or their characters, "disposed to do what is good or ju

c. 1300, "ascent of Christ from earth into Heaven in the presence of his disciples on the 40th day after the Resurrection," from Latin ascensionem (nominative ascensio) "a rising," noun of action from past-participle stem of ascendere "to mount, ascend, go up" (see ascend). The a