sulci
Noun
The word is derived from sulcus
Meaning
of Sulcus
Source: Webster's dictionaryExamples
In many mammals, the cerebral cortex consists of folded bulges called gyri that create deep furrows or fissures called sulci.
Colpi, sulci and pores are major features in the identification of classes of pollen. citation Pollen may be referred to as inaperturate (apertures absent) or aperturate (apertures present).
In the human brain more than two-thirds of the cerebral cortex is buried in the sulci.