What does «sustanciar» mean in Spanish?

To summarize, extract; to summarize or reduce to the essential (to the substance) a text, discourse, work, etc.

Examples of use in Spanish: "he sustanciado el argumento de esa novela".

"sustanciar el texto".
To carry out a project, an idea, a feeling, a procedure, etc.; to concretize.

Examples of use in Spanish: "sustanciar el proyecto".

"esta proclama viene a sustanciar la consolidada demanda feminista de llamar a las cosas por su nombre".
To conduct a lawsuit through the procedural process until it is ready for judgment.

Examples of use in Spanish: "sustanciar un proceso judicial".