| RAWSIENNA | Yellowish-brown natural earth pigment, composed primarily of iron oxide hydroxide (3,6) |
| SINOPIA | Reddish-brown natural earth pigment often used during the Renaissance to make the underpainting for frescoes (7) |
| MANGANITE | Black to steel-grey manganese oxide-hydroxide ore |
| MYOCARDIUM | Thick middle layer of the wall of the heart, composed primarily of muscle cells and fibroblasts (10) |
| BONEASH | White powder, composed primarily of calcium phosphate, used in fertilisers, polishing compounds, and in making ceramics |
| OCHRE | Pigment composed of iron oxide and clay (5) |
| NAPALMB | Thickening/gelling agent, composed primarily of benzene and polystyrene, mixed with gasoline or a similar fuel for use in military operations |
| REDPLANET | Nickname of Mars, so called because of the high levels of iron oxide found on its surface (3,6) |
| ELECTORAL | English reader with a list primarily of voters |
| NUMBERONE | Zero kept natural earth for himself? (6,3) |
| UMBER | Natural earth pigment (5) |
| OCHRY | Resembling a natural earth pigment |
| SIENNA | Natural earth pigment (6) |
| ROSEY | Description of an item with a reddish coating of iron oxide (5) |
| RUST | Coating of iron oxide that forms on iron or steel (4) |
| OCHER | Pigment of iron oxide |
| RAWUMBER | Natural yellowish-brown earth pigment |
| RAGGA | Dance-oriented subgenre of reggae consisting primarily of sampled or electronic music (5) |
| BRONZE | Hard alloy consisting primarily of copper and a smaller proportion of tin (6) |
| DOLOMITE | White crystalline mineral consisting primarily of calcium magnesium carbonate, used as an alternative to limestone in the manufacture of cement (8) |
