a. Nat. Hist. [ad. mod.L. aciculāt-us, f. ACICULA: cf. caudat-us f. cauda, and see -ATE2.] prop. Furnished or clothed with aciculæ; marked as with needle-scratches; improperly = ACICULAR.
1836. Penny Cycl., V. 251. Aciculate, needle-shaped.
1870. Hooker, Stud. Flora, 121. Calyx-tube densely aciculate.