(physics, chemistry) An organic compound, containing an unpaired electron spin, that can be bonded to a molecule under investigation so as to be analysed using electron spin resonance spectroscopy

(Britain) A female school crossing attendant.

Language considered inappropriate for use during a parliamentary session; especially profanity or suggestions of dishonesty.

(dated, 17th century) The principles under which the world and its components operate. / The strict enforcement of law, statutes, and social conventions.

An electric arc arranged so as to produce useful light.

Latin language as used in Britain, especially Medieval as well as Ecclesiastical and legal Latin.

The law that states that the usefulness of a telecommunications network is proportional to the square of the number of its users

An association founded in 1924 to study the establishment of an international auxiliary language. In 1951, IALA presented Interlingua to the public by publishing the Interlingua-English Dictionary and Interlingua Grammar. Abbreviated IALA.

Language in any of a number of different modalities such as speech, sign or writing.

(idiomatic, Britain) On a property ladder, owning property.