The Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory.he Pacific Time Zone observes standard time by subtracting eight hours from Coordinated Universal Time (UTCâ8). The standard time in this zone is based on the mean solar time of the 120th meridian west of the Greenwich Observatory.
What does viability mean in Agriculture Dictionary?: the power of a cell, organism, spore, seed or any other living thing to endure and carry on its life processes. Home Tools
Webster Dictionary(3.00 / 1 vote)Rate this definition: 1  Viability(noun) the quality or state of being viable. 2  Viability(noun) the capacity of living after birth. 3  Viability(noun) the capacity of living, or being distributed, over wide geographical limits; as, the viability of a species.