[問題] 請問descriptor在此的意思?

[christinea (六點十分)]

An analysis of the remaining one third of the popuplation reveals that about

20 percent of the total  number of American households are single people,

the  most common descriptor being women over sixty-five years of age.

我查descriptor 是 描述符 可否翻譯一下 ?

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→ christinea  :是情形嗎?是單身的是65歲以上嗎?
→ Ihsuma      :最常見的情形是六十五歲以上的女子（是單身家庭）。