15-letter words containing o, m, p, h, a
- souvanna phouma — Prince, 1901–84, Laotian statesman: premier 1951–54, 1956–58, 1960, and 1962–75.
- spanish customs — irregular practices among a group of workers to gain increased financial allowances, reduced working hours, etc
- spanish morocco — French Maroc. Spanish Marruecos. a kingdom in NW Africa: formed from a sultanate that was divided into two protectorates (French Morocco and Spanish Morocco) and an international zone. 172,104 sq. mi. (445,749 sq. km). Capital: Rabat. Compare Tangier Zone.
- spectrochemical — of, relating to, or utilizing the techniques of spectrochemistry.
- spirochaetaemia — the presence of spirochaetes in the blood
- stigmatophilist — a person who has stigmatophilia
- strephosymbolia — a condition of perceiving objects as their mirror image and, specifically, having difficulty in distinguishing letters in words
- sumatra camphor — borneol.
- swamp white oak — an oak, Quercus bicolor, of eastern North America, yielding a hard, heavy wood used in shipbuilding, for making furniture, etc.
- sympathetectomy — sympathectomy.
- sympathomimetic — mimicking stimulation of the sympathetic nervous system.
- theatre company — an organization that produces theatrical performances
- thermobarograph — a device that simultaneously records the temperature and pressure of the atmosphere
- thermogeography — the study of the geographical variation and distribution of temperature.
- thomas à kempis — Thomas à, 1379?–1471, German ecclesiastic and author.
- topographic map — a map showing topographic features, usually by means of contour lines.
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits