21-letter words containing h, o, l, n, y
- orthogonal trajectory — the locus of a point whose path cuts each curve of a family of curves at right angles.
- otorhinolaryngologist — (medicine) Doctor specializing in otorhinolaryngology, the study of ear, nose, and throat.
- physical anthropology — the branch of anthropology dealing with the evolutionary changes in human anatomy and physiology, using mensurational and descriptive techniques.
- pneumoencephalography — encephalography.
- polygenic inheritance — the heredity of complex characters that are determined by a large number of genes, each one usually having a relatively small effect.
- psychoneuroimmunology — the study of the effects of psychological factors on the immune system
- rayleigh distribution — (mathematics) A curve that yields a good approximation to the actual labour curves on software projects.
- rectangular hyperbola — a hyperbola with perpendicular asymptotes
- reverse polish syntax — postfix notation
- salam-weinberg theory — the electroweak theory.
- schlieren photography — a type of photography which records schlieren
- sunday school teacher — someone who teaches at a Sunday school
- tartarian honeysuckle — an Asian honeysuckle, Lonicera tatarica, having fragrant, white to pink flowers.
- the women's land army — a unit of women recruited to do agricultural work in the United Kingdom during World War I and World War II
- to fly in the face of — If an action or belief flies in the face of accepted ideas or rules, it seems to completely oppose or contradict them.
- to fly off the handle — If you fly off the handle, you suddenly and completely lose your temper.
- 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.
- weinberg-salam theory — electroweak theory.