micropyle

noun

1. Zoology. any minute opening in an ovum through which a spermatozoon can enter, as in many insects.
2. Botany. the minute orifice or opening in the integuments of an ovule.

noun

1. a small opening in the integuments of a plant ovule through which the male gametes pass
2. a small pore in the shell of an insect’s eggs through which the sperm passes

1. A minute opening in the ovule of a seed plant through which the pollen tube usually enters.
2. A pore in the membrane covering the ovum of some animals through which a spermatozoon can enter.