Anat. and Zool. [mod. L., dim. of SULCUS. Cf. F. sulcule.] A small sulcus or groove. Hence Sulculate a., having small grooves.
1848. Proc. Berw. Nat. Club, II. 338. Longitudinally striate or sulculate.
1859. Mayne, Expos. Lex., 1226/1.
1900. Trans. Linn. Soc., Zool., March, 533. One cannot speak of a sulcus and sulculus in this case.