a condenser having 2 or 3 lenses with wide aperture for use in microscopes

a condenser having 2 or 3 lenses with wide aperture for use in microscopes

a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets

a common scrubby deciduous tree of central and southeastern United States having dark bark and broad three-lobed (club-shaped) leaves; tends to form dense thickets