The specific epithet rigidum is from the Latin meaning 'rigid', likely referring to the leaflets.

[2] The tree grows up to 30 metres (100 ft) tall with a trunk diameter of up to 60 centimetres (24 in).

The bark is reddish-grey and when slashed releases an onion-like scent.

[2] Prasoxylon rigidum is found in Sumatra, Peninsular Malaysia and Borneo.

Its habitat is lowland rain forest from sea-level to 260 metres (1,000 ft) elevation.