extroversion. [-vurâ²zhÉn]. Etymology: L, extra + vertere, to turn. 1 the tendency to direct one's interests and energies toward external values or things outside the self. 2 the state of being totally or primarily concerned with what is outside the self. Also spelled extraversion. Compare introversion.
1 Your baby's eye color at birth may not be their permanent eye color. 2  It can take up to a year for your baby's final eye color to come in.  Eye color is determined by genetics.
Updated July 27, 2016. Baby eye color is likely to change over time. Baby eye color is determined by a substance called melanin. Melanin is a dark pigment contained in the iris, the structure that controls how much light is allowed into the eye. The color of the iris is determined by the amount of melanin in the iris.