Pinnate with a single leaflet at the apex; -- of a leaf shape.

said of compound leaves having an odd number of leaflets, this is usually easily determined because there is a single terminal leaflet.

adj. Pinnately compound with a terminal leaflet (or tendril) rather than a pair of leaflets (or a tendril), so that there is an odd number of leaflets; this is usually easily determined because there is a single terminal leaflet (or a terminal tendril). Also odd pinnate.

Operculum Opposite