Eucalyptus terphroclada is a mallee that typically grows to a height of and forms a
lignotuber. It has smooth, reddish, brownish and grey bark and branchlets covered with white, powdery granules. Young plants and
coppice regrowth have elliptical to lance-shaped leaves that are long, wide and
petiolate. Adult leaves are the same shade of glossy green on both sides, lance-shaped, long and wide on a petiole long. The flowers buds are arranged in leaf
axils in groups of nine to thirteen on a pendulous, thin, flattened, unbranched
peduncle long, the individual buds on
pedicels long. Mature buds are long and wide with a horn-shaped
operculum up to four times as long as the
floral cup. Flowering occurs from October to February and the flowers are pale lemony yellow. The fruit is a woody barrel-shaped to cup-shaped
capsule long and wide with the valves near rim level. ==Taxonomy and naming==