sorosis
Concise Oxford English Dictionary © 2008 Oxford University Press:
sorosis /səˈrəʊsɪs/
▶noun (pl. soroses /-siːz/) Botany a fleshy multiple fruit, e.g. a pineapple, derived from the ovaries of several flowers.
– origin C19: mod. L., from Gk sōros ‘heap’.
'sorosis' also found in these Oxford entries:

