Dictionary Meaning and Definition on 'Subordinator'
adj : used of words such as relative pronouns and subordinating
conjunctions that serve to subordinate sentence
constituents; "`that' in `the house that we bought' is
Wikipedia Meaning and Definition on 'Subordinator'
In linguistics (especially generative grammar), a complementizer (or complementiser) is a syntactic category (part of speech) roughly equivalent to the term subordinating conjunction in traditional grammar. For example, the word that is generally called a complementizer in English sentences like Mary believes that it is raining. The term "complementizer" was apparently first used by Rosenbaum (1967).
The standard abbreviation for complementizer is C. The complementizer is widely held to be the syntactic head of a full clause, which is therefore often represented by the abbreviation CP (for complementizer phrase). Evidence that the complementizer functions as the head of its clause includes the fact that it is commonly the last element in a clause in languages like Korean or Japanese, in which other heads follow their complements, and always first in "head-initial" languages such as English.[See more about Subordinator at Dictionary 3.0 Encyclopedia]