sorosis noun2 •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.The fruit of pineapple is a sorosis developing from numerous sessile flowers that are connote with their subtending bracts and with one another. — 2017 •(US, historical) A women's club; a society to further the educational and social activities of women.Yet these women were not a clique, nor a sect, nor a Sorosis, but all our wives, and sisters, and daughters, and lovers. They were just the common lot […] — 1869 formssoroses