Meaning of kernel sentence

ker'nel sen"tence

Pronunciation: [key]
  1. a simple, active, declarative sentence containing no modifiers or connectives that may be used in making more elaborate sentences: The sentence “Good tests are short” is made from two kernel sentences: (1) “Tests are short.” (2) “(The) tests are good.”
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.