acaroid resin 8:33 AM Anonymous acaroid resin [ORG CHEM] A gum resin from aloelike trees of the genus Xanthorrhoea inAustralia and Tasmania; used in varnishes and inks. Also known as gum accroides;yacca gum. { a kə ro ˙ id rez ən} Email ThisBlogThis!Share to XShare to Facebook letter A / organic chemistry