15-letter words containing t, h, e, o, d, s
- sphaerosiderite — a type of siderite
- spheroidization — the conversion of grains into spheroids
- spotted sunfish — a sunfish, Lepomis punctatus, inhabiting streams from South Carolina to Florida, having the body marked with longitudinal rows of spots.
- spread the word — make others aware
- staggered hours — a system of working in which the employees of an organization do not all arrive and leave at the same time, but have large periods of overlap
- start of header — (character) (SOH) mnemonic for ASCII 1.
- studhorse poker — stud poker.
- succedent house — any of the four houses that fall between the angular and cadent houses: the second, fifth, eighth, and eleventh houses, which correspond, respectively, to possessions and values, love and creation, shared possessions and resources, and friends and social concerns.
- superheterodyne — denoting, pertaining to, or using a method of processing received radio or video signals in which an incoming modulated wave is changed by the heterodyne process into a lower-frequency wave and then subjected to amplification and subsequent detection.
- sweep the board — (in gambling) to win all the cards or money
- the cordilleras — the complex of mountain ranges on the W side of the Americas, extending from Alaska to Cape Horn and including the Andes and the Rocky Mountains
- the devil's own — a very difficult or problematic (thing)
- the midas touch — ability to make money
- the second form — the second year of secondary school
- the-ambassadors — a novel (1903) by Henry James.
- thermodiffusion — thermal diffusion.
- thermoperiodism — the effect on an organism of rhythmic fluctuations in temperature.
- third dimension — the additional dimension by which a solid object is distinguished from a planar projection of itself or from any planar object.
- thorndike's law — the principle that all learnt behaviour is regulated by rewards and punishments, proposed by Edward Lee Thorndike (1874–1949), US psychologist
- threshold price — the highest price a retailer is allowed to sell a particular good at
- tie one's hands — the terminal, prehensile part of the upper limb in humans and other primates, consisting of the wrist, metacarpal area, fingers, and thumb.
- to change hands — When something changes hands, its ownership changes, usually because it is sold to someone else.
- to save the day — If someone or something saves the day in a situation which seems likely to fail, they manage to make it successful.
- toughened glass — glass that has been made stronger using chemical or thermal treatments so that it will not break easily
- two-thirds rule — a former rule in the Democratic Party, effective 1832–1936, requiring a vote of at least two thirds of its national convention delegates to nominate a presidential and vice-presidential candidate.
- under one's hat — a shaped covering for the head, usually with a crown and brim, especially for wear outdoors.
- unsophisticated — not sophisticated; simple; artless.
- vortex shedding — the process by which vortices formed continuously by the aerodynamic conditions associated with a solid body in a gas or air stream are carried downstream by the flow in the form of a vortex street
- winter holidays — a period of rest from work or studies taken in winter