american red cross.
something curved in shape
part of an unbroken curved line
a luminous discharge that occurs when an electric current flows between two electrodes or any other two surfaces separated by a small gap and a high potential difference
(astronomy) a circular section of the apparent path of a celestial body
(maths) a section of a curve, graph, or geometric figure
verb arcs, arcing, arced, arcs, arcking, arcked
(intransitive) to form an arc
(maths) specifying an inverse trigonometric function: usually written arcsin, arctan, arcsec, etc, or sometimes sin–1, tan–1, sec–1, etc
aids-related complex: an early condition in which a person infected with the aids virus may suffer from such mild symptoms as loss of weight, fever, etc
late 14c., originally in reference to the sun’s apparent motion in the sky, from old french arc “bow, arch, vault” (12c.), from latin arcus “a bow, arch,” from pie root -arku- “bowed, curved” (cf. gothic arhvazna “arrow,” old english earh, old norse ör; also, via notion of “supple, flexible,” greek arkeuthos, latvian ercis “juniper,” russian rakita, czech rokyta, serbo-croatian rakita “brittle willow”). electrical sense is from 1821.
1893, in the electrical sense, from arc (n.). meaning “to move in an arc” attested by 1954. related: arced; arcing.
a curved line or segment of a circle.
a segment of a circle.
see electric arc.
addiction research center
advance readers copy
amateur radio club
american red cross
[national aeronautics and sp-ce administration] ames research center
appalachian regional commission
anne robert jacques [an raw-ber zhahk] /ˈan rɔˈbɛr ˈʒɑk/ (show ipa), 1727–81, french statesman, financier, and economist. historical examples words are sometimes things; but never were words so completely things as those with which turgot welcomed franklin. atlantic monthly, volume 12, no. 73, november, 1863 various he can find no better answer than that of […]
- Adela rogers st johns
adela rogers, 1894–1988, u.s. journalist and writer. a river flowing n and e through ne florida into the atlantic. 276 miles (444 km) long. french st.-jean. a city in s quebec, in e canada.
allan r(ex) born 1926, u.s. astronomer: codiscoverer of the first quasar 1961. noun allan rex.1926–2010, us astronomer, who discovered the first quasar (1961)
arthur, 1867–1939, english ill-strator and painter. historical examples during many voyages anne sailed with captain rackham, and wherever there was pirate’s work to do, she was on deck to do it. buccaneers and pirates of our coasts frank richard stockton rackham wouldn’t clinch it with his oath unless i told him your name. blackbeard: buccaneer […]
prince abdul [ahb-dool] /ˈɑb dul/ (show ipa), 1903–90, malayan political leader: prime minister of malaya 1957–63; premier of malaysia 1963–70. contemporary examples rahman stood his ground, insisting that his daughter was too young to be engaged. afghanistan horror: a 14-year-old girl is beheaded sami yousafzai, ron moreau december 1, 2012 rahman was later found dead, […]