(signal processing) The ratio of maximum permitted frequency deviation, σₘₐₓ to the maximum permitted modulating frequency, fiₘₐₓ.

(archaic, often in plural) Duty, business; something that one must do.

(slang) A US marine.

simple past tense and past participle of devote

Vowed; dedicated; consecrated. / Strongly emotionally attached; very fond of someone or something. / Zealous; characterized by devotion. / (obsolete) Cursed; doomed.

(geology) of a geologic period within the Paleozoic era; comprises lower, middle and upper epochs from about 415 to 360 million years ago

(chiefly dated) A native or inhabitant of the English region of Devon.

(geology) the Devonian period

(sociology) A person with deviant behaviour; a deviant, degenerate or pervert.

(intransitive) To go off course from; to change course; to change plans. / (intransitive, figuratively) To fall outside of, or part from, some norm; to stray. / (transitive) To cause to diverge.