20-letter words containing f, e, n, d, r, l
- margaret of scotland — Saint. 1045–93, queen consort of Malcolm III of Scotland. Her piety and benefactions to the church led to her canonization (1250). Feast days: June 10, Nov 16
- new zealand fur seal — an Australasian seal, Arctocephalus forsteri
- order bill of lading — a bill of lading that is issued to the order of a shipper or consignee for delivery of the goods and that can be transferred by endorsement to third parties.
- pappus of alexandria — 3rd century bc, Greek mathematician, whose eight-volume Synagoge is a valuable source of information about Greek mathematics
- partial differential — an expression obtained from a given function of several variables by taking the partial derivative with respect to one of the variables and multiplying by the increment in that variable.
- paternal grandfather — the father of someone's father
- period of revolution — a rather large interval of time that is meaningful in the life of a person, in history, etc., because of its particular characteristics: a period of illness; a period of great profitability for a company; a period of social unrest in Germany.
- permonosulfuric acid — persulfuric acid (def 1).
- potential difference — voltage
- quantum field theory — any theory in which fields are treated by the methods of quantum mechanics; each field can then be regarded as consisting of particles of a particular kind, which may be created and annihilated.
- refuse disposal unit — a unit or part of a sink that disposes of waste food, etc, by grinding
- second earl of essex — 2nd Earl of, Devereux, Robert.
- self-differentiating — to form or mark differently from other such things; distinguish.
- split the difference — the state or relation of being different; dissimilarity: There is a great difference between the two.
- thomas of erceldoune — Thomas of, Thomas of Erceldoune.
- to fall on deaf ears — If a request falls on deaf ears or if the person to whom the request is made turns a deaf ear to it, they take no notice of it.
- to land on your feet — If you say that someone always lands on their feet, you mean that they are always successful or lucky, although they do not seem to achieve this by their own efforts.
- unified field theory — electroweak theory.
- uranium hexafluoride — a colorless, water-insoluble, crystalline, volatile solid, UF 6 , used in its gaseous state in separating uranium 235 from uranium.
- van der waals forces — weak electrostatic forces between atoms and molecules caused by transient distortions in the distribution of electrons in the interacting atoms or molecules
- wardrobe malfunction — an embarrassing situation caused by the clothes a person is wearing
- white-fringed beetle — any of several weevils of the genus Graphognathus, native to South America and now of southeastern and mid-Atlantic U.S., whose larvae feed on roots and cause serious damage to a wide variety of plants.