The Collaborative International Dictionary
Varioloid \Va"ri*o*loid\ (?; 277), a. [Variola + -oid: cf. F. variolo["i]de.] (Med.) Resembling smallpox; pertaining to the disease called varioloid.
Varioloid \Va"ri*o*loid\, n. [Cf. F. variolo["i]de. See Varioloid, a.] (Med.) The smallpox as modified by previous inoculation or vaccination.
Note: It is almost always a milder disease than smallpox, and
this circumstance, with its shorter duration, exhibits
the salutary effects of previous vaccination or
inoculation.
--Dunglison.
Wiktionary
a. Of or resembling smallpox n. A milder outbreak of smallpox occurring in a person who has previously been infected.
Usage examples of "varioloid".
Secretary of the Treasury were wondering how often varioloid proved fatal or if it ever ripened into black smallpox or if black smallpox in a President were grounds for impeachment.
This disease may be distinguished from variola and varioloid by the shortness of the period of invasion, the mildness of the symptoms, and the absence of the deep, funnel-shaped depression of the vesicles, so noticeable in variola.