Definition of infall in English:

infall

Syllabification: in·fall
Pronunciation: /ˈinfôl
 
/

noun

Astronomy
The falling of small objects or other matter onto or into a larger body.
More example sentences
  • The size of this infall is related directly to the amount of matter in the Universe.
  • K-bentonite horizons, interpreted as altered volcanic infall, are interbedded with the limestones of the Precordillera.
  • The strong form states that we're constantly being bombarded with biochemical material from space, and that there's a correlation between Viral outbreaks and patterns of infall.

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noun
retention of juvenile features in the adult animal