SOROSIS
Etymology 1
Noun
sorosis (plural soroses)
(botany) 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
sorosis (plural soroses)
(US historical) A women's club; a society to further the educational and social activities of women.
Source: Wiktionary
So*ro"sis, n. Etym: [NL. See Sororize.]
Definition: A woman's club; an association of women. [U. S.]
So*ro"sis, n. Etym: [NL., fr. Gr. (Bot.)
Definition: A fleshy fruit formed by the consolidation of many flowers with
their receptacles, ovaries, etc., as the breadfruit, mulberry, and
pineapple.
Source: Webster’s Unabridged Dictionary 1913 Edition