Search Result for "seconder": 
Wordnet 3.0

NOUN (1)

1. someone who endorses a motion or petition as a necessary preliminary to a discussion or vote; 



The Collaborative International Dictionary of English v.0.48:

Seconder \Sec"ond*er\, n.
   One who seconds[3] or supports what another attempts,
   affirms, moves, or proposes; as, the seconder of an
   enterprise or of a motion.
   [1913 Webster]


WordNet (r) 3.0 (2006):

seconder
    n 1: someone who endorses a motion or petition as a necessary
         preliminary to a discussion or vote