betatron betatron /ˈbɛtətrɒn/

noun

1. Accelerates a continuous beam of electrons to high speeds by means of the electric field produced by changing magnetic flux  ( betatron , induction accelerator )
   accelerates a continuous beam of electrons to high speeds by means of the electric field produced by changing magnetic flux
   
   

 two-toed sloth two-toed sloth /tuːˈtoʊd sloʊθ/

noun

1. Relatively small fast-moving sloth with two long claws on each front foot  ( Choloepus didactylus , two-toed sloth , unai , unau )
   relatively small fast-moving sloth with two long claws on each front foot
   
   
2. A sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot  ( Choloepus hoffmanni , two-toed sloth , unai , unau )
   a sloth of Central America that has two long claws on each forefoot and three long claws on each hindfoot
   

 end of the world end of the world /ɛnd ɒv ðə wɜːrld/

noun

1. An unpleasant or disastrous destiny  ( day of reckoning , doomsday , end of the world , doom )
   an unpleasant or disastrous destiny
    Everyone was aware of the approaching doom but was helpless to avoid it
   everyone was aware of the approaching doom but was helpless to avoid it
    That's unfortunate but it isn't the end of the world
   that's unfortunate but it isn't the end of the world
   
2. (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives  ( crack of doom , Day of Judgement , Day of Judgment , day of reckoning , Doomsday , end of the world , eschaton , Judgment Day , Last Day , Judgement Day , Last Judgement , Last Judgment )
   (New Testament) day at the end of time following Armageddon when God will decree the fates of all individual humans according to the good and evil of their earthly lives
   
   

 overcast overcast /ˈoʊvɝˌkæst/

adjective

1. () Filled or abounding with clouds  ( cloud-covered , sunless , clouded , overcast )
   filled or abounding with clouds
   

noun

1. () The state of the sky when it is covered by clouds  ( cloud cover , cloudiness , overcast )
   the state of the sky when it is covered by clouds
     The sky was overcast, signaling an impending storm.
   The sky was overcast, signaling an impending storm.
   
2. A cast that falls beyond the intended spot  ( overcast )
   a cast that falls beyond the intended spot
    The fisherman made an overcast, and the line landed far beyond where he intended.
   The fisherman made an overcast, and the line landed far beyond where he intended.
   
   
3. A long whipstitch or overhand stitch overlying an edge to prevent raveling  ( overcast , overcasting )
   a long whipstitch or overhand stitch overlying an edge to prevent raveling
   
   
4. Gloomy semidarkness caused by cloud cover  ( cloudiness , overcast )
   gloomy semidarkness caused by cloud cover
   
   

verb

1. Sew with an overcast stitch from one section to the next  ( overcast )
   sew with an overcast stitch from one section to the next
    Overcast books
   overcast books
   
2. Sew over the edge of with long slanting wide stitches  ( overcast )
   sew over the edge of with long slanting wide stitches
   
3. Make overcast or cloudy  ( overcast , cloud )
   make overcast or cloudy
    Fall weather often overcasts our beaches
   Fall weather often overcasts our beaches