A‐dust″ (�), a. [L. adustus, p. p. of adurere: cf. F. aduste.] 1. Inflamed or scorched; fiery. “The Libyan air adust.” Milton.
2. Looking as if or scorched; sunburnt.
A tall, thin man, of an adust complexion.
Sir W. Scott.
3. (Med.) Having much heat in the constitution and little serum in the blood. Hence: Atrabilious; sallow; gloomy.