as·sur·gent 
(ə-sûrjənt)
(ə-sûrjənt)adj.
1. Rising or tending to rise.
2. Botany Slanting or curving upward; ascending.
[Latin assurgēns, assurgent-, present participle of assurgere, to rise up to : ad-, ad- + surgere, to rise; see SURGE.]
as·surgen·cy n.