15-letter words containing p, h, o, t, a, s
- step on the gas — accelerate, drive faster
- stigmatophilist — a person who has stigmatophilia
- stop at nothing — to be prepared to do anything; be unscrupulous or ruthless
- strephosymbolia — a condition of perceiving objects as their mirror image and, specifically, having difficulty in distinguishing letters in words
- stretch a point — a sharp or tapering end, as of a dagger.
- substratosphere — the upper troposphere.
- 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.
- sweep the board — (in gambling) to win all the cards or money
- sycophantically — a self-seeking, servile flatterer; fawning parasite.
- sympathetectomy — sympathectomy.
- sympathomimetic — mimicking stimulation of the sympathetic nervous system.
- teng hsiao-ping — Deng Xiaoping.
- thalassographer — a person who studies the sea; an oceanographer
- thalassographic — relating to thalassography
- thalassotherapy — the use of sea water and marine products as a therapeutic treatment
- the jos plateau — a plateau in Nigeria with an average altitude of 1280 metres
- thomas à kempis — Thomas à, 1379?–1471, German ecclesiastic and author.
- trainspotterish — obsessed with trivial details, esp of a subject generally considered uninteresting
- ultrasonography — a diagnostic imaging technique utilizing reflected high-frequency sound waves to delineate, measure, or examine internal body structures or organs.
- unsophisticated — not sophisticated; simple; artless.
- vanishing point — a point of disappearance, cessation, or extinction: His patience had reached the vanishing point.
- washington palm — a palm tree, Washingtonia filifera, of California and Florida, having large fan-shaped leaves and small black fruits
- west hartlepool — a former borough, now part of Hartlepool, in Cleveland County, in NE England, at the mouth of the Tees.
- whip into shape — to bring by vigorous action into the proper or desired condition