In biology, particularly cell biology, the term organelle is used to describe any one of a number of types of subcellular structures, historically identified through the use of some form of microscopy.
A few large organelles probably originated from endosymbiont bacteria:
... noun or adjective, Royalist, can have several shades of meaning. At its simplest, it refers to an adherent of a monarch or royal family.
Of the more specific uses of ...