cæsious,a.|ˈsiːzɪəs| [f. L. cæsi-us bluish grey + -ous.] Bluish or greyish green. (Chiefly in Bot.) 1835Lindley Introd.Bot. (1848) II. 366 Cæsious; like glaucous, but greener.[1880Gray Bot.Text-bk. 400 Cæsius, lavender colour; pale green with whitish or gray.]