[Definition] The introductory rate provided to purchasers of ARM loans for the initial fixed interest period. [Term] 
Start Rate
X / Y
F u l l y I n d e x e d R a t e
M a r g i n
I n d e x
S t a r t R a t e
P e r i o d
F l o o r
P a y m e n t S h o c k
C a p