substantive

IPA: sˈʌbstʌntɪv

Part of a text that carries the meaning, such as words and their ordering.
(grammar) Clipping of noun substantive. [(grammar, obsolete) A word that can be used to refer to a person, animal, place, thing, phenomenon, substance, quality, or idea; one of the basic parts of speech in many languages, including English.]

(grammar, very rare) To make a word belonging to another part of speech into a substantive (that is, a noun) or use it as a noun.

Of the essence or essential element of a thing.
(by extension) Constituting the substance of content rather than its style, and thus always nontrivial.
Having substance; enduring; solid; firm; substantial.
(law) Applying to essential legal principles and rules of right.
(chemistry, of a dye) Not needing the use of a mordant to be made fast to that which is being dyed.
Depending on itself; independent.
(grammar) Of or pertaining to a substantive.
(military, of a rank or appointment) Actually and legally held, as distinct from an acting, temporary or honorary rank or appointment

Examples of "substantive" in Sentences

The meeting covered a range of topics, but only a few were deemed substantive enough for further discussion
The new policy changes brought about substantive improvements in employee morale and productivity
The research team presented their findings with a substantive amount of supporting data
She was impressed by his substantive knowledge of the subject matter
The judge ruled that the evidence presented was not substantive enough to warrant a conviction