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Origin and history of helio-

helio-

word-forming element meaning "sun," from Greek hēlios "sun" (from PIE root *sawel- "the sun").

Entries linking to helio-

heliocentric(adj.)

1680s, from helio- + -centric.

heliograph(n.)

1848, "instrument for taking photographs of the sun," from helio- "sun" + -graph "something written." Earlier, "a description of the sun" (1706, implied in heliographic). From 1877 as the name of a movable mirror used in signaling. Related: Heliographical.

Heliography (1845) was the word for the product of a type of engraving process by chemical reaction from exposure to sunlight. It also was an early term for what came to be called photography (1840).

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Nike
Greek goddess of victory (identified by the Romans with their Victoria), literally "victory, upper hand" (in battle, in contests, in court), probably connected with neikos "quarrel, strife," neikein "to quarrel with," a word of uncertain etymology and perhaps a pre-Greek word. As
panegyric
"eulogy, laudation, praise bestowed upon some person, action, or character," c. 1600, from French panégyrique (1510s), from Latin panegyricus "public eulogy," originally an adjective, "for a public festival," from Greek panēgyrikos (logos) "(a speech) given in or addressed to a p
nightingale
"small migratory bird of the Old World, noted for the male's melodious song, heard by night as well as day," Middle English nighte-gale, from Old English næctigalæ, in late Old English nihtegale, a compound formed in Proto-Germanic (compare Dutch nachtegaal, German Nachtigall) fr
mentor
"wise adviser, intimate friend who also is a sage counselor," especially to one who is young or inexperienced, 1750, from Greek Mentor, in the Odyssey" the name of the friend of Odysseus and adviser of Telemachus (but often actually Athene appearing in disguise). The name perhaps
fact
1530s, "action, a thing performed, anything done, a deed," good or evil but in 16c.-17c. commonly "evil deed, crime;" from Latin factum "an event, occurrence, deed, achievement," in Medieval Latin also "state, condition, circumstance" (source also of Old French fait, Spanish hech
accident
late 14c., "an occurrence, incident, event; what comes by chance," from Old French accident (12c.), from Latin accidentem (nominative accidens) "an occurrence; chance; misfortune," noun use of present participle of accidere "happen, fall out, fall upon," from ad "to" (see ad-) +
dispatch
1510s, "to send off, send to a destination," usually implying urgent importance or haste, from Spanish despachar "expedite, hasten" or cognate Italian dispacciare "to dispatch." For first element, see dis-. The second element apparently has been confused or corrupted, and its exa
liberty
late 14c., "free choice, freedom to do as one chooses," also "freedom from the bondage of sin," from Old French liberte "freedom, liberty, free will" (14c., Modern French liberté), from Latin libertatem (nominative libertas) "civil or political freedom, condition of a free man; a
regret
 late 14c., regreten, "to look back with distress or sorrowful longing; to grieve for on remembering," from Old French regreter "long after, bewail, lament someone's death; ask the help of" (Modern French regretter), from re-, intensive prefix (see re-), + -greter, which is
dusk
"partial darkness, state between light and darkness, twilight," 1620s, from an earlier adjective dusk, from Middle English dosc (c. 1200) "obscure, not bright; tending to darkness, shadowy," having more to do with color than light, which is of uncertain origin, not found in Old E

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