21-letter words containing r, h, e, o

theoretical physicist — a scientist who studies theoretical physics
therapeutic community — a group-based form of therapy for mental disorders, sometimes residential
there's nothing to it — If you say 'There's nothing to it', 'There's not much to it', or 'That's all there is to it', you are emphasizing how simple you think something is.
thermal decomposition — Thermal decomposition is the process in which a chemical species breaks down when its temperature is increased.
thermal power station — a power station in which heat is converted into electricity
thermoelectric couple — thermocouple.
thermoelectric effect — the production of an electromotive force in a thermocouple.
thermophosphorescence — thermoluminescence.
third party procedure — impleader.
threatening behaviour — intimidation or intentional behaviour that causes another person to fear injury or harm
three-toed woodpecker — either of two woodpeckers of the genus Picoides, of the Northern Hemisphere, having only three toes on each foot.
threshold wage policy — a policy whereby wages are increased in accordance with inflation
throw one's hat at it — to give up all hope of getting or achieving something
throw sb a curve ball — If someone throws you a curve or throws you a curve ball, they surprise you by doing something that you do not expect.
throw someone a curve — a continuously bending line, without angles.
to be hard luck on sb — to be unfortunate or unlucky for someone
to be killed outright — If someone is killed outright, they die immediately, for example in an accident.
to fall into the trap — If someone falls into the trap of doing something, they think or behave in a way which is not wise or sensible.
to feather one's nest — If you say that someone is feathering their nest, you mean that they are getting a lot of money out of something, so that they can lead a comfortable life.
to get into high gear — if people or an activity go into high gear, moves into high gear, etc, people do what they were doing more intensely, or the activity becomes more intense
to have green fingers — If someone has green fingers, they are very good at gardening and their plants grow well.
to have money to burn — If you say that someone has money to burn, you mean that they have more money than they need or that they spend their money on things that you think are unnecessary.
to lay something bare — If you lay something bare, you uncover it completely so that it can then be seen.
to let your hair down — If you let your hair down, you relax completely and enjoy yourself.
to look the other way — If you say that someone looks the other way, you are critical of them because they pay no attention to something unpleasant that is happening, when they should be dealing with it properly.
to mix your metaphors — If you mix your metaphors, you use two conflicting metaphors. People do this accidentally, or sometimes deliberately as a joke.
to play the race card — if someone plays the race card they bring up the issue of race in a discussion, perhaps for sympathy or to seek popularity by appealing to racist sentiment
to rear its ugly head — If something unpleasant rears its head or rears its ugly head, it becomes visible or noticeable.
to rub shoulders with — If you rub shoulders with famous people, you meet them and talk to them. You can also say that you rub elbows with someone, especially in American English.
to set foot somewhere — If you say that someone sets foot in a place, you mean that they enter it or reach it, and you are emphasizing the significance of their action. If you say that someone never sets foot in a place, you are emphasizing that they never go there.
to shoot from the hip — If you say that someone shoots from the hip or fires from the hip, you mean that they react to situations or give their opinion very quickly, without stopping to think.
to sink without trace — If you say that someone or something sinks without trace or sinks without a trace, you mean that they stop existing or stop being successful very suddenly and completely.
to take the high road — to take the course of action which is safest and most familiar
to tell you the truth — You say to tell you the truth or truth to tell in order to indicate that you are telling someone something in an open and honest way, without trying to hide anything.
to think better of it — If you intend to do something and then think better of it, you decide not to do it because you realize it would not be sensible.
to throw in the towel — If you throw in the towel, you stop trying to do something because you realize that you cannot succeed.
trichloroacetaldehyde — chloral (def 1).
trichloronitromethane — chloropicrin.
triethyl orthoformate — a colorless liquid, C 7 H 16 O 3 , used chiefly in organic synthesis.
triple superphosphate — superphosphate (def 2).
triple-superphosphate — Also called acid phosphate. a mixture of calcium acid phosphate and calcium sulfate prepared by treating phosphate rock with sulfuric acid: used chiefly as a fertilizer.
truth or consequences — a game in which each contestant is asked a question and upon failure to answer or give a correct answer receives a penalty imposed by the leader or the group.
weak head normal form — (reduction, theory) (WHNF) A lambda expression is in weak head normal form (WHNF) if it is a head normal form (HNF) or any lambda abstraction. I.e. the top level is not a redex. The term was coined by Simon Peyton Jones to make explicit the difference between head normal form (HNF) and what graph reduction systems produce in practice. A lambda abstraction with a reducible body, e.g. \ x . ((\ y . y+x) 2) is in WHNF but not HNF. To reduce this expression to HNF would require reduction of the lambda body: (\ y . y+x) 2 --> 2+x Reduction to WHNF avoids the name capture problem with its need for alpha conversion of an inner lambda abstraction and so is preferred in practical graph reduction systems. The same principle is often used in strict languages such as Scheme to provide call-by-name evaluation by wrapping an expression in a lambda abstraction with no arguments: D = delay E = \ () . E The value of the expression is obtained by applying it to the empty argument list:
weinberg-salam theory — electroweak theory.
well-ordering theorem — the theorem of set theory that every set can be made a well-ordered set.
what price something? — what are the chances of something happening now?
what the future holds — If you wonder what the future holds, you wonder what will happen in the future.
whip-and-tongue graft — a graft prepared by cutting both the scion and the stock in a sloping direction and inserting a tongue in the scion into a slit in the stock.
white-crowned sparrow — a North American sparrow, Zonotrichia leucophrys, having black and white stripes on the head.
wholesale price index — an indicator of price changes in the wholesale market

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