Webster's Revised Unabridged Dictionary · 1913

Degrade

Degrade , transitive verb

[French dégrader, Late Latin degradare, from Latin de- + gradus step, degree. See Grade, and compare Degree.]

1.
To reduce from a higher to a lower rank or degree; to lower in rank; to deprive of office or dignity; to strip of honors; as, to degrade a nobleman, or a general officer.
Prynne was sentenced by the Star Chamber Court to be degraded from the bar. — Palfrey
2.
To reduce in estimation, character, or reputation; to lessen the value of; to lower the physical, moral, or intellectual character of; to debase; to bring shame or contempt upon; to disgrace; as, vice degrades a man.
O miserable mankind, to what fall Degraded, to what wretched state reserved! — Milton
Yet time ennobles or degrades each line. — Pope
Her pride... struggled hard against this degrading passion. — Macaulay
3.
(Geology) To reduce in altitude or magnitude, as hills and mountains; to wear down.

Degrade , intransitive verb

(Biology) To degenerate; to pass from a higher to a lower type of structure; as, a family of plants or animals degrades through this or that genus or group of genera.