Dense irregular connective tissue. Dense irregular connective tissue has fibers that are not arranged in parallel bundles as in dense regular connective tissue. Substances formed[edit] This tissue comprises a large portion of the dermis. This type of tissue is also in the protective white layer of the eyeball and in the deeper skin layers.
Definition of VERMICULITE. : any of various micaceous minerals that are hydrous silicates resulting usually from expansion of the granules of mica at high temperatures to give a lightweight highly water-absorbent material. See vermiculite defined for kids. ADVERTISEMENT.
Vermilion is a vivid reddish-orange color. Originally, the vermilion pigment was made from grinding the mineral cinnabar, which contains mercury. Because mercury is toxic, a new synthetic pigment called cadmium red was developed in the 20th century to replace vermilion. Continue Reading.