A table or book of tables showing the yields of bonds at different interest rates and maturities. For example, if one is considering the purchase of a bond, one can take the coupon rate and the maturity and compare them in the basis book to determine the yield. The basis book is good for approximating yields, but financial calculators tend to be more accurate, especially for more complex bonds.
A book of tables giving conversions to equivalent dollar prices for bond yields having given maturity lengths and coupon rates. Also called bond basis book.