anat·ro·pous /əˈnætrəpəs/
倒生的
A·nat·ro·pal A·nat·ro·pous a. Bot. Having the ovule inverted at an early period in its development, so that the chalaza is as the apparent apex; -- opposed to orthotropous.
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anatropous
adj : (of a plant ovule) completely inverted; turned back 180
degrees on its stalk [syn: inverted] [ant: amphitropous]