constituent
con-stit-u-ent
adjective
Forming a necessary part or component of something larger.
"The constituent elements of the mixture were identified."
noun
A voter represented by an elected official in a specific political area.
"She met with her constituents to discuss local issues."
noun
A component part or element forming a larger whole or system.
"Oxygen is a major constituent of the atmosphere."
Thesaurus
Synonyms: grammatical constituent, element, component, factor, ingredient, portion, component part, part