Webster's Revised Unabridged Dictionary · 1913

Levigate

Levigate (-gat) , adjective

[Latin levigatus, past participle of levigare to lighten, from levis light.]

Made less harsh or burdensome; alleviated. [Obsolete] — Sir T. Elyot

Levigate (-gāt) , transitive verb

[Latin levigatus, past participle of levigare to make smooth, from lēvis smooth; akin to Greek lei^os.]

To make smooth in various senses
(a)
To free from grit; to reduce to an impalpable powder or paste.
(b)
To mix thoroughly, as liquids or semiliquids.
(c)
To polish.
(d)
To make smooth in action.
(e)
Technically, to make smooth by rubbing in a moist condition between hard surfaces, as in grinding pigments.
When use hath levigated the organs. — Barrow

Levigate (-gat) , adjective

[Latin levigatus, p. p.]

Made smooth, as if polished.