record player. 1. a device for reproducing the sounds stored on a record, consisting of a turntable, usually electrically driven, that rotates the record at a fixed speed of 33, 45, or (esp formerly) 78 revolutions a minute.
Two-generation approaches can be applied to programs, policies, systems, and research. Programs: Two-generation programs provide opportunities for and meet the needs of parents and their children together.
Alternation of generations - Evolutionary emergence of the dominant diploid phase. 1  It has been proposed that the basis for the emergence of the diploid phase of the life cycle (sporophyte) as the dominant phase (e.g. as in vascular plants) is that diploidy allows masking of the expression of deleterious mutations through genetic complementation.