purchase option

基本解释

Table compression is on by default (if you purchase the option).
表压缩是默认启用的（如果您购买了该功能）。
Recognition and measurement of goodwill or a gain from a bargain purchase option.
确认和计量从购买选择权的交易中获取的商誉或利得。
guli.2003.blog.163.com
Except for Party A and the Designee(s), no other person shall be entitled to the Equity Interest Purchase Option or other rights with respect to the equity interests of Party B.
除甲方和被指定人外，任何第三人均不得享有股权购买权或其他与乙方股权有关的权利。

Another purchase option is Right Media, an online ad network that has hosted since 2003 an open ad exchange similar to DoubleClick's offering.
FORBES: Magazine Article
When its profitability dipped last summer, according to its SEC filings, Inktomi was forced to exercise a purchase option--in essence to repay Deutsche Bank for the loan on the building.
FORBES: Buy High!
Double up, he says, but erase the risk in the second purchase with option trades.
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