Spiroylic \Spi*royl"ic\, Spiroylous \Spi*royl"ous\, a. [NL. Spir? meadowsweet (a source of salicylal) + -yl + -ic, -ous.]

(Chem.) Pertaining to, or designating, a substance now called salicylal. [Obs.]

Source: Webster's Revised Unabridged Dictionary (1913)