Definition
"Sulcate" means having grooves or furrows, especially longitudinal ones. Imagine the surface of a walnut or the deep lines in an old tree's bark. It's similar to "striate" but often implies deeper, more pronounced grooves. It is often used in botany and zoology to describe the anatomy of plants and animals. Think of it like the valleys on a wrinkled surface. It emphasizes the presence of distinct channels or indentations.