sorosis

Etymology 1
From.

Noun

 * 1)  Any multiple fruit, usually fleshy, that is derived from the multiple ovaries in an infructescence. Such a structure typically includes remnants of floral tissues such as the perianth. Examples include the mulberry and pineapple.

Etymology 2
According to Webster Suppl. 1879, an arbitrary use of the botanical term, adopted as the name of the first club of the kind, founded in 1868. It follows that it shares the same etymology, referring to aggregation, rather than the etymology of sorority, which referred to sisterhood.

Noun

 * 1)  A women's club; a society to further the educational and social activities of women.