19-letter words containing f, a, i, r, y
- respiratory failure — a condition in which the respiratory system is unable to provide an adequate supply of oxygen or to remove carbon dioxide efficiently
- rural free delivery — former name for rural delivery service. Abbreviation: R.F.D.
- sea of tranquillity — Astronomy. Mare Tranquillitatis.
- secondary infection — an infection resulting from another infection
- stanford university — (education) A University in the city of Palo Alto, California, noted for work in computing, especially artificial intelligence. See SAIL.
- take my word for it — If you say to someone 'take my word for it', you mean that they should believe you because you are telling the truth.
- theory of equations — the branch of mathematics dealing with methods of finding the solutions to algebraic equations.
- ultrahigh frequency — any frequency between 300 and 3000 megahertz. Abbreviation: UHF, uhf.
- whorfian hypothesis — Sapir-Whorf hypothesis.
- yellowtail flounder — a righteyed flounder, Limanda ferruginea, inhabiting waters along the Atlantic coast of North America, having a yellowish tail fin and rusty-red spots on the body: once commercially important, now greatly reduced in number.