a. Nat. Hist. [f. L. lūteol-us (dim. of lūteus LUTEOUS) + -OUS.] Somewhat luteous, yellowish.
1856. in Mayne, Expos. Lex.
1874. H. C. Wood, Fresh-w. Algæ N. Amer., 99. The microgonidia indefinite in number, much the smaller, pale or dirty green or luteolous.