Informal. solar energy.

Origin of solar

1400–50; late Middle English < Latin sōlāris, equivalent to sōl sun + -āris -ar1


[sol-er, soh-ler]


a private or upper chamber in a medieval English house.
Also sollar, soller.

Origin of solar

before 900; Middle English solar, soler < Anglo-French soler, Old French solier < Latin sōlārium solarium; compare Old English solor, soler, Middle Dutch solre loft < Latin Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for solar

Contemporary Examples of solar

Historical Examples of solar

  • For the cross of four equal arms and the solar wheel are also to be met with.

    The Non-Christian Cross

    John Denham Parsons

  • That graveled him; he said that she couldn't any more get out of order than the solar sister.

    Tom Sawyer Abroad

    Mark Twain (Samuel Clemens)

  • Every swarm of meteors in the solar system was carefully plotted.

    Pirates of the Gorm

    Nat Schachner

  • I was smart enough to fool all the so-called brains of the Solar System.

    Irresistible Weapon

    Horace Brown Fyfe

  • Almost, Mr. Smith forgot people and the solar system and what had been.

    Happy Ending

    Fredric Brown

British Dictionary definitions for solar



of or relating to the sunsolar eclipse
operating by or utilizing the energy of the sunsolar cell
astronomy determined from the motion of the earth relative to the sunsolar year
astrology subject to the influence of the sun

Word Origin for solar

C15: from Latin sōlāris, from sōl the sun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for solar

mid-15c., "pertaining to the sun," from Latin solaris "of the sun," from sol "sun" (see sol). Meaning "living room on an upper story" is from Old English, from Latin solarium (see solarium).

Astrological sense from 1620s. Meaning "operated by means of the sun" is from 1740; solar power is attested from 1915, solar cell from 1955, solar panel from 1964. Solar system is attested from c.1704; solar wind is from 1958. Solar plexus (1771) "complex of nerves in the pit of the stomach," apparently so called from its central position in the body (cf. plexus).

Online Etymology Dictionary, © 2010 Douglas Harper

Science definitions for solar



Relating to the Sun.
Using or operated by energy from the Sun.
Measured in reference to the Sun.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.