• WordNet 3.6
    • adj amphitropous (of a plant ovule) partly inverted; turned back 90 degrees on its stalk
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Webster's Revised Unabridged Dictionary
    • a Amphitropous (Bot) Having the ovule inverted, but with the attachment near the middle of one side; half anatropous.
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Century Dictionary and Cyclopedia
    • amphitropous In botany: Having the hilum lateral and intermediate between the chalaza and micropyle; half-anatropous; heterotropous: applied to an ovule or seed, Having the embryo curved or coiled, as in all campylotropous seeds: so used by Richard.
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Webster's Revised Unabridged Dictionary
Gr. 'amfi` + tre`pein to turn


In literature:

RHAPHE, the line or ridge which runs from the hilum to the chalaza in anatropous and amphitropous seeds.
"The Elements of Botany" by Asa Gray
Seeds amphitropous or campylotropous.
"The Manual of the Botany of the Northern United States" by Asa Gray