Partitive
WordNet
adjective
(1) Serving to separate or divide into parts
"Partitive tendencies in education"
"The uniting influence was stronger than the separative"
(2) Indicating or characterized by or serving to create partition or division into parts
"Partitive tendencies in education"
(3) (Romance languages) relating to or denoting a part of a whole or a quantity that is less than the whole
"A partitive construction"
noun
(4) Word (such a `some' or `less') that is used to indicate a part as distinct from a whole