rhem- +

(Greek: a thing said; a word; a term)

monorheme, monorhemic
A single element or word with a phrasal meaning.
rhema
A verb; word; and term.
rhematic
1. Referring to the formation of words.
2. The science of sentences or propositions.
3. Having a verb for its base; derived from verbs.
rhematology
The study of rhemes, a branch of semantics.
rheme
1. That part of a proposition or sentence that expresses a single idea. Specialized use in current linguistics: that part of a sentence giving new information about a theme.
2. In linguistics, the expression of a single idea or notion; a semanteme; any semantic unit or element of speech.
3. The part of a sentence, often the predicate, that adds the greatest amount of new information to what is already available in the discourse.