noun
residential mortgage-backed security; RMBS
A financial instrument backed by residential mortgages. Used in banking and investment contexts.
住宅ローン担保証券は、住宅ローンを裏付けとして発行される証券です。
Residential mortgage-backed securities are securities issued backed by residential mortgages.
Compound of 住宅ローン (residential mortgage) + 担保 (collateral) + 証券 (security). A direct calque of the English term.