18-letter words containing f, l, u, o, r, c
- spectrofluorometer — an instrument in which the spectrum of secondarily emitted fluorescent light is used to identify chemical compounds.
- structural formula — a chemical formula showing the linkage of the atoms in a molecule diagrammatically, as H–O–H.
- theater of cruelty — a form of surrealist theater originated by Antonin Artaud and emphasizing the cruelty of human existence by portraying sadistic acts and intense suffering.
- theatre of cruelty — a type of theatre advocated by Antonin Artaud in Le Théâtre et son double that seeks to communicate to its audience a sense of pain, suffering, and evil, using gesture, movement, sound, and symbolism rather than language
- ultralow frequency — an electromagnetic wave with a frequency between 300 and 3000 hertz. Abbreviation: ULF, ulf.
- ur of the chaldees — the city where Abraham was born, sometimes identified with the Sumerian city of Ur. Gen. 11:28, 31; 15:7; Neh. 9:7.
- very low frequency — any frequency between 3 and 30 kilohertz. Abbreviation: VLF.
- weak nuclear force — weak interaction