Meaning of pseudoelement | Babel Free

Definitions

1. An object in code that behaves like an HTML element but is not a true element.
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2. In a chemical formula, something that is called by a chemical symbol, but is not an element; e.g. Et may mean ethyl group, or Ph (or Φ) may mean phenyl group. (See "Skeletal formula § Pseudoelement symbols" on Wikipedia.)

CEFR level