Which Joe gave his name to ‘sloppy joes’? We look at five interesting sandwiches and their lexical origins.
A complex fossilized organic material, found in oil shale and other sedimentary rock, which is insoluble in common organic solvents and yields petroleum products on distillation.
- ‘It should be mentioned that the bulk of reduced carbon on Earth is sediment-bound kerogen, which most probably is of biological origin.’
- ‘These indices are independent of the organic matter abundance and strongly related to the elemental composition of kerogen.’
- ‘Remarkably, when these carbon isotopes are traced back in geologic history, the average carbon isotopic composition of seawater and of most of the kerogen was similar to today.’
- ‘Retorting is the process of using heat to decompose the kerogen, converting it into a liquid called shale oil.’
- ‘The bulk of organic matter in sedimentary rocks is in the form of kerogen: complex polymeric material that is insoluble in inorganic solvents, and difficult to analyse chemically.’
Early 20th century: from Greek kēros ‘wax’ + -gen.
We take a look at several popular, though confusing, punctuation marks.
From Afghanistan to Zimbabwe, discover surprising and intriguing language facts from around the globe.
The definitions of ‘buddy’ and ‘bro’ in the OED have recently been revised. We explore their history and increase in popularity.