prop. n. A small genus of herbs of the Pacific coast of North and South America. Syn. -- genus Lasthenia. [ WordNet 1.5 ]
{ ‖ } n. [ NL. asthenia, Gr. 'asqe`nia; 'a priv. + sqe`nos strength. ] (Med.) Want or loss of strength; debility; diminution of the vital forces. [ 1913 Webster ]