BB cream is promoted as an all-in-one facial cosmetic product to replace serum, moisturizer, primer, foundation and sunblock. It can be worn alone as a tinted moisturizer, over serum and moisturizer as a regular foundation, and under powder, depending on the desired amount of coverage. 1  1 History.  2 Formulations.
Definition. Naturalistic observation is research that involves studying the subject of interest in its own environment, as it would occur in day-to-day life. The subject of interest may be human or non-human or it can be the behavior of living things or the interactions of non-living things with their environment.
Definition of NATURALISTIC FALLACY. : the process of defining ethical terms (as the good) in nonethical descriptive terms (as happiness, pleasure, and utility).ADVERTISEMENT.his word doesn't usually appear in our free dictionary, but the definition from our premium Unabridged Dictionary is offered here on a limited basis.