18-letter words containing m, u, l, t, i, h
- the-master-builder — a play (1892) by Ibsen.
- thermoluminescence — phosphorescence produced by the heating of a substance.
- white trumpet lily — a lily, Lilium longiflorum, of Japan, having fragrant, pure white, trumpet-shaped flowers nearly 7 inches (18 cm) in length.
- widemouth blindcat — any of several catfishes, as Satan eurystomus (widemouth blindcat) of Texas, that inhabit underground streams and have undeveloped eyes and unpigmented skin.