a. [f. SPINULE + -OUS.] = SPINULOSE a.
1846. Dana, Zooph. (1848), 155. A few of the foliaceous Astræidæ … have the surface simply striated and spinulous.
1870. H. A. Nicholson, Man. Zool., 108. The sclerobasis … in the latter … is always either smooth or spinulous.
