Symbolism The Uraeus is a symbol for the goddess Wadjet. She was one of the earliest Egyptian deities and was often depicted as a cobra, as she is the serpent goddess. The center of her cult was in Per-Wadjet, later called Buto by the Greeks. She became the patroness of the Nile Delta and the protector of all of Lower Egypt.
Rigor is something strict, severe or demanding. 1  Harsh and strict treatment in the military for cadets is an example of rigor. 2  Freezing weather and ice are examples of the rigors of winter.  Difficult and challenging academic courses are an example of academic rigor.
Definition of effector. 1  1 : a bodily organ (as a gland or muscle) that becomes active in response to stimulation. 2  2 : a molecule (as an inducer or a corepressor) that activates, controls, or inactivates a process or action (as protein synthesis)