of or for six years.
occurring every six years.
occurring once every six years or over a period of six years
a sixth anniversary
noun 1. sexual activity, regarded as a way of keeping fit
noun 1. either the male or female division of a species, especially as differentiated with reference to the reproductive functions. 2. the sum of the structural and functional differences by which the male and female are distinguished, or the phenomena or behavior dependent on these differences. 3. the instinct or attraction drawing one sex toward […]
adjective, Latin. 1. six. noun 1. the sum of the characteristics that distinguish organisms on the basis of their reproductive function 2. either of the two categories, male or female, into which organisms are placed on this basis 3. short for sexual intercourse 4. feelings or behaviour resulting from the urge to gratify the sexual […]
noun, Genetics. 1. a sex-determining chromosome or gene. 2. Also called F factor, fertility factor. a plasmid in certain bacteria that enables transfer of genetic material from a donor cell to a recipient by conjugation, resulting in recombination.