UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈsaɪtɪŋ/

Collins Concise English Dictionary © HarperCollins Publishers::
sighting /ˈsaɪtɪŋ/ n
  1. an occasion on which something is seen
  2. Another name for sight
WordReference Random House Learner's Dictionary of American English © 2020
sight /saɪt/USA pronunciation   n. 
  1. Physiology the power or ability of seeing;
    vision:[uncountable]suffering from a gradual loss of sight.
  2. the act or fact of seeing;
    a view or glimpse:[countable]a gruesome sight.
  3. one's range of vision:[uncountable]Don't let them out of your sight.
  4. something seen or worth seeing;
    a spectacle:[countable]to see all the sights of London.
  5. Informal Terms a person or thing unusual, shocking, or distressing to see:[countable;  usually singular;+ ~]He was quite a sight after the brawl.
  6. Slang Terms[Chiefly Dialect.]a great deal:[countable;  singular;+ ~]It's a sight better to work than to starve.
  7. Surveying, Optics a viewing device, as on a firearm, for aiding the eye in aiming:[countable;  often: plural]The assassin had the target lined up in his sights.

  1. to glimpse, notice, or observe:[+ object]to sight a ship to the north.
  2. to direct or aim (a firearm or the like) by a sight or sights: [no object]to sight and fire with one quick movement.[+ object]to sight the gun.
  1. Idiomsat first sight, [uncountable] after only one brief glimpse:When they met it was love at first sight.
  2. Idiomsat sight, [uncountable]
    • immediately upon seeing:to translate the document at sight.
    • Businesson presentation:a check payable at sight.
  3. by a long sight, [uncountable;  usually with a negative word or phrase] to a great or extreme degree:You haven't finished this book by a long sight.
  4. Idiomscatch sight of, [+ object] to get a quick view:They caught sight of him racing away in the crowd.
  5. know by sight, [know + object + by + ~] to know or recognize (a person or thing seen previously):I know him by sight, but I've never spoken to him.
  6. lose sight of, [+ object] to fail to keep in mind:Let's not lose sight of our main goal, even though we may disagree on how to get there.
  7. Idiomson sight, [uncountable] immediately upon seeing:The police are ordered to shoot him on sight.
  8. Idiomsout of sight, [uncountable]
    • beyond one's range of vision:She drove away and slowly faded out of sight.
    • [Informal.]too much;
      exceedingly high:The price is out of sight.
    • [Slang.](often used as an interjection) fantastic;
      marvelous:The party was out of sight.
  9. Idiomssight for sore eyes, [uncountable] someone or something whose appearance is a reason for gladness:The airplane bringing the food was a sight for sore eyes to the drought victims.
  10. Idiomssight unseen, without previous examination:We bought it sight unseen.

WordReference Random House Unabridged Dictionary of American English © 2020
sight  (sīt),USA pronunciation n. 
  1. Physiologythe power or faculty of seeing;
    perception of objects by use of the eyes;
  2. an act, fact, or instance of seeing.
  3. one's range of vision on some specific occasion:Land is in sight.
  4. a view;
  5. mental perception or regard;
  6. something seen or worth seeing;
    spectacle:the sights of London.
  7. Informal Termssomething unusual, surprising, shocking, or distressing:They were a sight after the fight.
  8. Communications
    • Businesspresentation of a bill of exchange:a draft payable at two months after sight.
    • Businessa showing of goods, esp. gems, held periodically for wholesalers.
  9. Slang Terms[Older Use.]a multitude;
    great deal:It's a sight better to work than to starve.
  10. Surveyingan observation taken with a surveying, navigating, or other instrument to ascertain an exact position or direction.
  11. Surveying, Opticsany of various mechanical or optical viewing devices, as on a firearm or surveying instrument, for aiding the eye in aiming.
  12. [Obs.]skill;
  13. at first sight, at the first glimpse;
    at once:It was love at first sight.
  14. at sight: 
    • immediately upon seeing, esp. without referring elsewhere for assurance, further information, etc.:to translate something at sight.
    • Business[Com.]on presentation:a draft payable at sight.
  15. catch sight of, to get a glimpse of;
    espy:We caught sight of the lake below.
  16. know by sight, to recognize (a person or thing) seen previously:I know him by sight, but I know nothing about him.
  17. Informal Termsnot by a long sight, definitely not:Is that all? Not by a long sight.
  18. on or  upon sight, immediately upon seeing:to shoot him on sight; to recognize someone on sight.
  19. out of sight: 
    • beyond one's range of vision.
    • [Informal.]beyond reason;
      exceedingly high:The price is out of sight.
    • [Slang.](often used interjectionally) fantastic;
      marvelous:a ceremony so glamorous it was out of sight.
  20. sight for sore eyes, someone or something whose appearance on the scene is cause for relief or gladness.
  21. sight unseen, without previous examination:to buy something sight unseen.

  1. to see, glimpse, notice, or observe:to sight a ship to the north.
  2. Surveyingto take a sight or observation of (a stake, coastline, etc.), esp. with surveying or navigating instruments.
  3. to direct or aim by a sight or sights, as a firearm.
  4. to provide with sights or adjust the sights of, as a gun.

  1. to aim or observe through a sight.
  2. to look carefully in a certain direction.
sighta•ble, adj. 
sighter, n. 
  • bef. 950; Middle English (noun, nominal); Old English sihth (more often gesihth, gesiht; cognate with German Gesicht face; compare y-), derivative of sēon to see1; see -th1

Collins Concise English Dictionary © HarperCollins Publishers::
sight /saɪt/ n
  1. the power or faculty of seeing; perception by the eyes; vision
    Related adjective(s): visual
  2. the act or an instance of seeing
  3. the range of vision: within sight of land
  4. range of mental vision; point of view; judgment: in his sight she could do nothing wrong
  5. a glimpse or view (esp in the phrases catch sight of, lose sight of)
  6. anything that is seen
  7. (often plural) anything worth seeing; spectacle: the sights of London
  8. informal anything unpleasant or undesirable to see: his room was a sight!
  9. any of various devices or instruments used to assist the eye in making alignments or directional observations, esp such a device used in aiming a gun
  10. an observation or alignment made with such a device
  11. a sightinformal a great deal: she's a sight too good for him
  12. a sight for sore eyesa person or thing that one is pleased or relieved to see
  13. at sight, on sightas soon as seen
  14. on presentation: a bill payable at sight
  15. know by sightto be familiar with the appearance of without having personal acquaintance
  16. not by a long sightinformal on no account; not at all
  17. set one's sights onto have (a specified goal) in mind; aim for
  18. sight unseenwithout having seen the object at issue: to buy a car sight unseen
  1. (transitive) to see, view, or glimpse
  2. (transitive) to furnish with a sight or sights
  3. to adjust the sight of
  4. to aim (a firearm) using the sight
Etymology: Old English sihth; related to Old High German siht; see see1

ˈsightable adj
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