The Collaborative International Dictionary
Sulcate \Sul"cate\, Sulcated \Sul"ca*ted\, a. [L. sulcatus, p. p. of sulcare to furrow, fr. sulcus a furrow.] Scored with deep and regular furrows; furrowed or grooved; as, a sulcated stem.
Douglas Harper's Etymology Dictionary
"furrowed, grooved," 1760, from Latin sulcatus, past participle of sulcare "to make furrowed," from sulcus "furrow, trench, ditch" (see sulcus).
a. Having deep, narrow sulcus, grooves or furrows.
adj. having deep narrow furrows or grooves