Describes a sporangium formed of a single cell, which undergoes meiotic division commonly followed by mitosis after which the cytoplasm divides to produce four or more spores (usually motile).

Refers to a sporangium or gametangium made of one mother-cell, which forms many spores or gametes by multiple fission.

Having one cell or cavity only; as, a unilocular capsule or shell.

Cyst containing only on cavity.

of an ovary, anther or fruit, having only one internal cavity.

A term used to describe a radiographic appearance of a single, rounded compartment or locule.