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
   
   

 hydrophyte hydrophyte /ˈhaɪdrəˌfaɪt/

noun

1. A plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth  ( aquatic plant , hydrophyte , hydrophytic plant , water plant )
   a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth
    I have a few water plants in my backyard pond that help keep the water clean
   I have a few water plants in my backyard pond that help keep the water clean
   
   

 short iron short iron /ʃɔːrt ˈaɪrən/

noun

1. An iron with a short shaft and pitched face; for hitting short high shots  ( short iron )
   an iron with a short shaft and pitched face; for hitting short high shots
    When close to the green, a golfer might opt for a short iron for more accuracy.
   When close to the green, a golfer might opt for a short iron for more accuracy.
   
   

 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