(chemistry) in a coordination compound, the number of ions or molecules that are coordinated to the central metal ion; its coordination number

(biochemistry) The general three-dimensional structure of a biopolymer such as DNA or a protein.

(chemistry) An amine containing two radicals, of general formula R₁R₂-NH; the radicals may be the same, different, or part of a ring.

(education, Britain, Ireland) In the UK and Ireland, a state school attended between the ages of 11 and 16 or 18.

(chemistry) any compound of general formula R₂P-H

(scholarly studies) A written commentary which discusses previously produced original work of another author, especially a notable author.

(physics) The emission of electrons from the surface of a solid when bombarded with electrons or other charged particles

(finance) The financial market for trading of securities that have already been issued in an initial private or public offering.

Research performed through the summary, collation or synthesis of the results of existing research.

(medicine) The healthcare services provided by medical specialists who generally do not have first contact with patients, e.g. cardiologists, urologists, or endodontists. It includes short-term care for acute conditions such as injury and childbirth.