| 释义 |
mi·cro·pyle
\ˈ ̷ ̷ ̷ ̷ˌpīl\ noun
(-s)
Etymology: International Scientific Vocabulary micr- + -pyle (from Greek pylē gate); probably originally formed in French — more at pylon
1.
a. : a differentiated area of surface in many eggs through which a sperm enters
b. : an opening in various spores through which enclosed protoplasts escape
2. : a minute opening in the integument of an ovule of a seed plant through which the pollen tube normally penetrates to the embryo sac and which often persists in the seed as an opening or superficial scar — called also foramen |