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  1  definition  found 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
  Elytron  \El"y*tron\  (?;  277),  Elytrum  \El"y*trum\  (-tr?m)n.;  pl 
  {Elytra}.  [NL.,  fr  Gr  ?,  fr  ?  to  roll  round.]  (Zo["o]l.) 
  a  One  of  the  anterior  pair  of  wings  in  the  Coleoptera  and 
  some  other  insects,  when  they  are  thick  and  serve  only  as 
  a  protection  for  the  posterior  pair.  See  {Coleoptera}. 
  b  One  of  the  shieldlike  dorsal  scales  of  certain  annelids. 
  See  {Ch[ae]topoda}.