monocarpellary
/ˌmɒnə(ʊ)ˈkɑːpəl(ə)ri/ /ˌmɒnə(ʊ)ˈkɑːp(ə)l(ə)ri/Botany
adjective
Having or consisting of a single carpel.
Origin
Mid 19th century; earliest use found in George Bentham (1800–1884), botanist. From mono- + carpellary, perhaps after monocarp.