By a extractive process.

Something that is extracted or drawn out. / A portion of a book or document, incorporated distinctly in another work; a citation; a quotation.

(transitive) To draw out; to pull out; to remove forcibly from a fixed position, as by traction or suction, etc.

present participle of extract

An act of extracting or the condition of being extracted. / A person's origin or ancestry. / Something extracted, an extract, as from a plant or an organ of an animal etc.

simple past tense and past participle of extract

plural of extract

Third-person singular simple present indicative form of extract

That serves to extract something / That withdraws natural resources by extraction / Able to be extracted

Something that may be extracted / The substance left behind after something has been extracted