N-UNCOUNT 附加社会保障收入; Supplemental Security Income的缩写SSI is money that is paid by the government to elderly and disabled people with limited income or assets. SSI is an abbreviation for "Supplemental Security Income." 附加社会保障收入; Supplemental Security Income的缩写 [US]
Blind and disabled people are eligible for SSI even under age 65.