Wiktionary
micropile
n. 1 microfleece (material). 2 A type of pile used in building/construction. 3 Opening in the seed coat which allows water to enter. 4 An opening in the membranes surrounding the ovum, by which nutrition is assisted and the entrance of the spermatozoa permitted.
Usage examples of "micropile".
In that period the best energy source for satellites or interstellar probes was the atomic micropile.