athematic verb stem vowel ATN grammar augmented transition network grammar atomic concept semantic primitive atomic sentence

In propositional logic ( formal logic), an elementary sentence of a language that does not itself contain any sentence in this language (and thus also no logical connectives). Thus, Philip is tall is an atomic sentence, but not Philip is tall and stocky, since this expression consists of two sentences that are connected by the logical connective and: Philip is tall and Philip is stocky.