Webster's Revised Unabridged Dictionary · 1913

Assimilate

Assimilate ({not transcribed}) , transitive verb

[Latin assimilatus, past participle of assimilare; ad + similare to make like, similis like. See Similar, Assemble, Assimilate.]

1.
To bring to a likeness or to conformity; to cause a resemblance between. — Sir M. Hale
To assimilate our law to the law of Scotland. — John Bright
Fast falls a fleecy; the downy flakes Assimilate all objects. — Cowper
2.
To liken; to compare. [Rare]
3.
To appropriate and transform or incorporate into the substance of the assimilating body; to absorb or appropriate, as nourishment; as, food is assimilated and converted into organic tissue.
Hence also animals and vegetables may assimilate their nourishment. — Sir I. Newton
His mind had no power to assimilate the lessons. — Merivale

Assimilate , intransitive verb

1.
To become similar or like something else. [Rare]
2.
To change and appropriate nourishment so as to make it a part of the substance of the assimilating body.
Aliment easily assimilated or turned into blood. — Arbuthnot
3.
To be converted into the substance of the assimilating body; to become incorporated; as, some kinds of food assimilate more readily than others.
I am a foreign material, and cannot assimilate with the church of England. — J. H. Newman