subconstituent

noun3

1. •
   A part or component of a syntactic, morphological, or phonetic constituent.

   • The dominance relation directly characterizes the property of subconstituency: X dominates Y if Y is a subconstituent of X. — 2000
2. •
   One component of an algebra or graph that is made up of the union of several subalgebras or subgraphs.

   • The second subconstituent of a graph with respect to some vertex x is the induced graph on the vertices distinct from x, and that are not adjacent to x. — 1999
3. •
   A component of an elementary particle.

   • The term prequark has appeared in the literature as a name for subconstituents in composite models [4]. — 1993