hemitropous

from The Century Dictionary.

• Turned half round; half-inverted: specifically applied in botany to an ovule in which the axis of the nucleus is more curved than in an anatropous ovule. Also hemitropal.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• adjective Turned half round; half inverted.
• adjective botany, of an ovule Having the raphe terminating about halfway between the chalaza and the orifice; amphitropous.