"rolled up together," 1794, from Latin convolutus, past participle of convolvere "to roll together," from assimilated form of com "with, together" (see con-) + volvere "to roll," from PIE root *wel- (3) "to turn, revolve." The noun meaning "something convoluted" is from 1846.
a convolute petal
convive
convivial
convocate
convocation
convoke
convolute
convoluted
convolution
convolve
convoy
convulse