3-D: Small for 3-dimensional. This phrase is an adjective for something that has options that can be explained in three dimensions — top, width and size.
colleague: Somebody who operates with another a co-employee or crew member.
CT scan: (Also known as a CAT scan). The expression is brief for computerized axial tomography. It is a exclusive type of X-ray scanning engineering that provides cross-sectional sights of the inside of a bone or entire body.
decomposition: The system by which compounds in at the time-living items are broken down and returned to the atmosphere the procedure