Inventors (1204 pages found in this category)

Priest hole

Secret hiding places in the homes of prominent Catholics to hide priests from persecution.

Prime number

Any positive integer greater than zero that has only two proper divisors, 1 and the number itself. Thus the lowest prime number is 2, which is also the only even prime.

Privacy policy

Privacy policy,
last updated on 13 June 2020

Proper divisor

Number that when divided into another number leaves no remainder.


Part of a theatre stage in front of the curtain.

Proscenium arch

Redirected to proscenium.

Pull quotes & quotations

A guide to pull quotes and the {{quote}} plugin.

Punishment of Incest Act 1908

Act of Parliament making it illegal for the first time in England and Wales for a man to engage in sexual intercourse with any female he knew to be his grand-daughter, daughter, sister, half-sister, or mother.

Quatermass and the Pit

British television science-fiction serial from the BBC, broadcast in 1958/1959.

Queen’s House

Former royal residence near Greenwich Palace, built between 1616 and 1635.