sul·cate 
(sŭlkāt′)
(sŭlkāt′)adj.
Biology
Biology
Having narrow, deep furrows or grooves, as a stem or tissue.
[Latin sulcātus, past participle of sulcāre, to furrow, from sulcus, furrow.]
- interregional
- interregnal
- interregnum
- interrelate
- interrelatedness
- interrelationship
- interreligious
- interrobang
- interrog.
- interrogate
- interrogation
- interrogational
- interrogation point
- interrogative
- interrogatively
- interrogator
- interrogatorily
- interrogatory
- interrupt
- interrupter
- interruptible
- interruption
- interruptive
- interscholastic
- interscholastically