Eucalyptus miniata is a tree that typically grows to a height of , sometimes as tall as , usually with a single trunk, and forms a
lignotuber. The bark is soft, rough, fibrous and fissured, grey to red-yellow-brown in colour on the trunk with white to pale grey smooth bark on the upper trunk and branches. Young plants and
coppice regrowth have greenish-brown leaves that are elliptical in shape, long and wide. Adult leaves are dull to slightly glossy green, paler on the lower surface, lance-shaped to curved, long and wide. tapering to a
petiole long. The flower buds are arranged in groups of seven on an unbranched
peduncle long, the individual buds
sessile or on
pedicles up to long. Mature buds are club-shaped, rarely spindle-shaped,
glaucous, long and wide with ribs along the sides and a rounded to conical
operculum. Flowering occurs from May to September and the flowers are orange or scarlet and up to in diameter. The fruits are woody, cylindrical to barrel-shaped or urn-shaped
capsules long, wide and have longitudinal ribbing with the valves enclosed below the level of the rim. The fruits are glaucous at first but lose that covering over time and contain seeds that are dark grey to black, long with an obliquely pyramidal to flattened cuboid shape. ==Taxonomy and naming==