In the United States railroad industry a hostler is a type of railroad engineer who moves locomotives in and out of service facilities.  1 Hostler - Definition and More from the Free Merriam-Webster Dictionary. 2  EtymologyOnLine- Hostler.  3 909.663-010: HOSTLER (motor trans.) alternate titles: hook-up driver; yard spotter.
The purpose of radioactive seed localization (RSL) of non-palpable lesions is to localize suspicious tissues for excision with the use of radioactive seeds. RSL differs from current localization procedures, whereby a non-radioactive wire is implanted into the lesion site and excised along with the affected tissue.
Definition. Zero-volatility spread. A tool used in the analysis of an asset swap that uses the zero-coupon yield curve to calculate the spread.The Z-spread is the number of basis points that would have to be added to the spot yield curve so that the bond's discounted cash flows equal the bond's present value.Each cash flow is discounted using its maturity and the spot rate for that maturity term, so each cash flow has its own zero-coupon rate.he Z-spread is the number of basis points that would have to be added to the spot yield curve so that the bond's discounted cash flows equal the bond's present value. Each cash flow is discounted using its maturity and the spot rate for that maturity term, so each cash flow has its own zero-coupon rate.